Hada Kazuhiro 秦和弘

Researcher Number	60724458
Other IDs
Affiliation (Current)	2025: 名古屋市立大学, 大学院理学研究科, 准教授
Affiliation (based on the past Project Information) *help	2024: 名古屋市立大学, 大学院理学研究科, 准教授 2015 – 2023: 国立天文台, 水沢VLBI観測所, 助教 2014: 国立天文台, 水沢VLBI観測所, 特別客員研究員
Review Section/Research Field	Principal Investigator Basic Section 16010:Astronomy-related / Medium-sized Section 16:Astronomy and related fields / Astronomy Except Principal Investigator Medium-sized Section 16:Astronomy and related fields / Basic Section 16010:Astronomy-related / Astronomy / Complex systems
Keywords	Principal Investigator ブラックホール / 電波天文学 / 相対論的ジェット / 活動銀河核 / 超長基線電波干渉計（VLBI） / VLBI / ジェット / 超長基線電波干渉計(VLBI) / 超長基線電波干渉計 Except Principal Investigator ジェット … More / 電波天文学 / ブラックホール / 磁場構造 / 活動銀河核 / 磁場 / 電波干渉計 / 時間変動 / 多波長偏光観測 / 活動銀河核ジェット / 偏光 / 高精度観測 / 大規模数値シミュレーション / ブラックホールジェット / 数値シミュレーション / 降着円盤 / 電波ジェット / 電波天文 / 天文 / 偏波・偏光 / 天体磁場 / 天文学 / VLBI / 超巨大ブラックホール / 一般相対性理論的磁気流体力学 / 一般相対論的磁気流体力学 / 活動銀河核ジェット加速機構 / 短ミリ波VLBI / コンパクト天体 / サブミリ波 / 干渉計 / 疎性モデリング / イメージング Less

Understanding the formation mechanisms of supermassive black holes jets using high-resolution and high-cadence millimeter VLBI observationsPrincipal Investigator
- Principal Investigator
  
  秦和弘
- Project Period (FY)
  2022 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 16:Astronomy and related fields
- Research Institution
  Nagoya City University
  National Astronomical Observatory of Japan
超大規模計算と超高精度観測で解き明かすブラックホールジェットの駆動機構と多様性
- Principal Investigator
  
  大須賀健
- Project Period (FY)
  2021 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 16:Astronomy and related fields
- Research Institution
  University of Tsukuba
Clarifying magnetic fields in AGN jets by radio and optical polarimetry together with VLBI images
- Principal Investigator
  
  Kameno Seiji
- Project Period (FY)
  2021 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 16010:Astronomy-related
- Research Institution
  National Astronomical Observatory of Japan
Probing magnetic fields of supermassive black-hole jets with next-generation international VLBI networksPrincipal Investigator
- Principal Investigator
  
  Hada Kazuhiro
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 16010:Astronomy-related
- Research Institution
  National Astronomical Observatory of Japan
Revealing the formation of relativistic jets in supermassive black holes using global VLBI networksPrincipal Investigator
- Principal Investigator
  
  Hada Kazuhiro
- Project Period (FY)
  2018 – 2021
- Research Category
  
  Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
- Review Section
  
  Medium-sized Section 16:Astronomy and related fields
- Research Institution
  National Astronomical Observatory of Japan
Study of launching mechanism of cosmic jet in the vicinity of super massive black-hole by direct imaging
- Principal Investigator
  
  Niinuma Kotaro
- Project Period (FY)
  2018 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 16:Astronomy and related fields
- Research Institution
  Yamaguchi University
Acceleration regions in jets from supermassive black holes probed by a next-generation international VLBI networkPrincipal Investigator
- Principal Investigator
  
  秦和弘
- Project Period (FY)
  2018
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 16010:Astronomy-related
- Research Institution
  National Astronomical Observatory of Japan
Approaching the creation mechanism of black hole jet using mm-VLBI polarimetry
- Principal Investigator
  
  Hagiwara Yoshiaki
- Project Period (FY)
  2015 – 2018
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Astronomy
- Research Institution
  Toyo University
Observational study of jet-formation regions in supermassive black holes with a novel VLBI techniquePrincipal Investigator
- Principal Investigator
  
  Hada Kazuhiro
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Astronomy
- Research Institution
  National Astronomical Observatory of Japan
Imaging Super-massive Black Holes with Sparse Modeling
- Principal Investigator
  
  Honma Mareki
- Project Period (FY)
  2013 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
- Review Section
  
  Complex systems
- Research Institution
  National Astronomical Observatory of Japan

All 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 Other

All Journal Article Presentation

[Journal Article] Super-Resolved Image of M87 Observed with East Asian VLBI Network2023
- Author(s)
  Tazaki F., et al., including Honma, M.,
- Journal Title
  
  Galaxies
  
  Volume: 11 Issue: 2 Pages: 39-39
- DOI
  10.3390/galaxies11020039
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19KK0081, KAKENHI-PROJECT-21H04488, KAKENHI-PROJECT-22H00157
[Journal Article] The Past and Future of East Asia to Italy: Nearly Global VLBI2023
- Author(s)
  Gabriele Giovannini, Yuzhu Cui, Kazuhiro Hada, Kunwoo Yi, Hyunwook Ro, Bong Won Sohn, Mieko Takamura, Salvatore Buttaccio, Filippo D’Ammando, Marcello Giroletti, Yoshiaki Hagiwara, Motoki Kino, Evgeniya Kravchenko, Giuseppe Maccaferri, Alexey Melnikov, Kotaro Niinuma, Monica Orienti,..., Akihiro Doi, et al.
- Journal Title
  
  Galaxies
  
  Volume: 11 Issue: 2 Pages: 49-49
- DOI
  10.3390/galaxies11020049
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K04020, KAKENHI-PROJECT-21K03618, KAKENHI-PROJECT-21K03628, KAKENHI-PROJECT-22H00157
[Journal Article] Transverse Oscillations of the M87 Jet Revealed by KaVA Observations2023
- Author(s)
  Ro Hyunwook、Yi Kunwoo、Cui Yuzhu、Kino Motoki、Hada Kazuhiro、Kawashima T. et al.
- Journal Title
  
  Galaxies
  
  Volume: 11 Issue: 1 Pages: 33-33
- DOI
  10.3390/galaxies11010033
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22H00157
[Journal Article] Magnetic Reconnection in Black Hole Magnetospheres: Lepton Loading into Jets, Superluminal Radio Blobs, and Multiwavelength Flares2022
- Author(s)
  Kimura Shigeo S.、Toma Kenji、Noda Hirofumi、Hada Kazuhiro
- Journal Title
  
  The Astrophysical Journal Letters
  
  Volume: 937 Issue: 2 Pages: L34-L34
- DOI
  10.3847/2041-8213/ac8d5a
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K21884, KAKENHI-PROJECT-22K14028, KAKENHI-PROJECT-18H01245, KAKENHI-PROJECT-23K20239, KAKENHI-PROJECT-21H04488, KAKENHI-PROJECT-22H00157, KAKENHI-PROJECT-20H01941
[Journal Article] The Photon Ring in M87*2022
- Author(s)
  Broderick, A. E., Pesce, D. W., Gold, R., incl. Hada, K., et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 935 Issue: 1 Pages: 61-61
- DOI
  10.3847/1538-4357/ac7c1d
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H04488
[Journal Article] The Intrinsic Structure of Sagittarius A* at 1.3 cm and 7 mm2022
- Author(s)
  Cho Ilje、Zhao Guang-Yao、Kawashima Tomohisa、Kino Motoki、Akiyama Kazunori、Johnson Michael D.、Issaoun Sara、Moriyama Kotaro、Cheng Xiaopeng、Algaba Juan-Carlos、Jung Taehyun、Sohn Bong Won、Krichbaum Thomas P.、Wielgus Maciek、Hada Kazuhiro、他51名
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 926 Issue: 2 Pages: 108-108
- DOI
  10.3847/1538-4357/ac4165
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-21K03618, KAKENHI-PROJECT-21K03628, KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-19KK0081, KAKENHI-PROJECT-21H04488
[Journal Article] Demonstration of Ultrawideband Polarimetry Using VLBI Exploration of Radio Astrometry (VERA)2022
- Author(s)
  Hagiwara Yoshiaki、Hada Kazuhiro、Takamura Mieko、Oyama Tomoaki、Yamauchi Aya、Suzuki Syunsaku
- Journal Title
  
  Galaxies
  
  Volume: 10 Issue: 6 Pages: 114-114
- DOI
  10.3390/galaxies10060114
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-22H00157
[Journal Article] First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way2022
- Author(s)
  Event Horizon Telescope Collaboration
- Journal Title
  
  The Astrophysical Journal Letters
  
  Volume: 930 Issue: 2 Pages: L12-L12
- DOI
  10.3847/2041-8213/ac6674
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-19KK0081, KAKENHI-PROJECT-21H04488, KAKENHI-PROJECT-22H00157
[Journal Article] The Variability of the Black Hole Image in M87 at the Dynamical Timescale2022
- Author(s)
  Satapathy Kaushik、Psaltis Dimitrios、Ozel Feryal、Hada Kazuhiro、Kino Motoki、et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 925 Issue: 1 Pages: 13-13
- DOI
  10.3847/1538-4357/ac332e
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-18K13594
[Journal Article] Collimation of the Relativistic Jet in the Quasar 3C 2732022
- Author(s)
  Okino Hiroki、Akiyama Kazunori、Asada Keiichi、Gomez Jose L.、Hada Kazuhiro、Honma Mareki、Krichbaum Thomas P.、Kino Motoki、Nagai Hiroshi、Bach Uwe、Blackburn Lindy、Bouman Katherine L.、et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 940 Issue: 1 Pages: 65-65
- DOI
  10.3847/1538-4357/ac97e5
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-21H04488, KAKENHI-PROJECT-22H00157
[Journal Article] Multifrequency VLBI Observations of the M84 Inner Jet/Counterjet2022
- Author(s)
  Wang X.、Jiang W.、Shen Z.、Huang L.、Hada K.、Cui Y.、Lu R.-S
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 941 Issue: 2 Pages: 140-140
- DOI
  10.3847/1538-4357/aca27b
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22H00157
[Journal Article] Implications from the Velocity Profile of the M87 Jet: A Possibility of a Slowly Rotating Black Hole Magnetosphere2022
- Author(s)
  Kino Motoki、Takahashi Masaaki、Kawashima Tomohisa、Park Jongho、Hada Kazuhiro、Ro Hyunwook、Cui Yuzhu
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 939 Issue: 2 Pages: 83-83
- DOI
  10.3847/1538-4357/ac8c2f
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-17K05439, KAKENHI-PROJECT-21H04488, KAKENHI-PROJECT-22H00157, KAKENHI-PROJECT-19H01900
[Journal Article] Constraints on black-hole charges with the 2017 EHT observations of M87*2021
- Author(s)
  Kocherlakota Prashant、Rezzolla Luciano、Falcke Heino、Hada Kazuhiro、Kino Motoki、et al.
- Journal Title
  
  Physical Review D
  
  Volume: 103 Issue: 10 Pages: 104047-104047
- DOI
  10.1103/physrevd.103.104047
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-18K13594
[Journal Article] Event Horizon Telescope observations of the jet launching and collimation in Centaurus A2021
- Author(s)
  Janssen Michael、Falcke Heino、Kadler Matthias、Hada Kazuhiro、Kino Motoki、et al.
- Journal Title
  
  Nature Astronomy
  
  Volume: 5 Issue: 10 Pages: 1017-1028
- DOI
  10.1038/s41550-021-01417-w
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-21H04488
[Journal Article] A Revised View of the Linear Polarization in the Subparsec Core of M87 at 7 mm2021
- Author(s)
  Park Jongho、Asada Keiichi、Nakamura Masanori、Kino Motoki、Pu Hung-Yi、Hada Kazuhiro、Kravchenko Evgeniya V.、Giroletti Marcello
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 922 Issue: 2 Pages: 180-180
- DOI
  10.3847/1538-4357/ac26bf
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943
[Journal Article] Testing the magnetic flux paradigm for AGN radio loudness with a radio-intermediate quasar2021
- Author(s)
  Chamani W.、Savolainen T.、Hada K.、Xu M. H.
- Journal Title
  
  Astronomy and Astrophysics
  
  Volume: 652 Pages: A14-A14
- DOI
  10.1051/0004-6361/202140676
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-21H04488
[Journal Article] Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign2021
- Author(s)
  EHT Multi-wavelength Science Working Group et al.
- Journal Title
  
  The Astrophysical Journal Letters
  
  Volume: 911 Issue: 1 Pages: L11-L11
- DOI
  10.3847/2041-8213/abef71
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-17H06131, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-19K14761, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-21K03628, KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-19KK0081, KAKENHI-PROJECT-17H01126, KAKENHI-PROJECT-21H04488
[Journal Article] Jet Collimation and Acceleration in the Giant Radio Galaxy NGC 3152021
- Author(s)
  Park Jongho、Hada Kazuhiro、Nakamura Masanori、Asada Keiichi、Zhao Guangyao、Kino Motoki
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 909 Issue: 1 Pages: 76-76
- DOI
  10.3847/1538-4357/abd6ee
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-18K03656
[Journal Article] Morphological Transition of the Compact Radio Lobe in 3C 84 via the Strong Jet-Cloud Collision2021
- Author(s)
  Kino Motoki、Niinuma Kotaro、Kawakatu Nozomu、Nagai Hiroshi、Giovannini Gabriele、Orienti Monica、Wajima Kiyoaki、D’Ammando Filippo、Hada Kazuhiro、Giroletti Marcello、Gurwell Mark
- Journal Title
  
  The Astrophysical Journal Letters
  
  Volume: 920 Issue: 1 Pages: L24-L24
- DOI
  10.3847/2041-8213/ac24fa
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-19K03918, KAKENHI-PROJECT-21K03628, KAKENHI-PROJECT-21H04488
[Journal Article] X-ray spectral components of the blazar and binary black hole candidate OJ 287 (2005-2020)2021
- Author(s)
  Komossa S、Grupe D、Parker M L、Gomez J L、Valtonen M J、Nowak M A、Jorstad S G、Haggard D、Chandra S、Ciprini S、Dey L、Gopakumar A、Hada K、Markoff S、Neilsen J
- Journal Title
  
  Monthly Notices of the Royal Astronomical Society
  
  Volume: 504 Issue: 4 Pages: 5575-5587
- DOI
  10.1093/mnras/stab1223
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-19H01943
[Journal Article] Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 20202021
- Author(s)
  MAGIC Collaboration, Hada Kazuhiro, 他17名
- Journal Title
  
  Monthly Notices of the Royal Astronomical Society
  
  Volume: 510 Issue: 2 Pages: 2344-2362
- DOI
  10.1093/mnras/stab3454
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-21K03628, KAKENHI-PROJECT-17H06131, KAKENHI-PROJECT-17H01126
[Journal Article] East Asian VLBI Network observations of active galactic nuclei jets: imaging with KaVA+Tianma+Nanshan2021
- Author(s)
  Cui Yu-Zhu、Hada Kazuhiro、他75名
- Journal Title
  
  Research in Astronomy and Astrophysics
  
  Volume: 21 Issue: 8 Pages: 205-205
- DOI
  10.1088/1674-4527/21/8/205
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-21K03618, KAKENHI-PROJECT-21K03628, KAKENHI-PROJECT-19KK0081, KAKENHI-PROJECT-21H04488
[Journal Article] The Polarized Image of a Synchrotron-emitting Ring of Gas Orbiting a Black Hole2021
- Author(s)
  Narayan Ramesh、Palumbo Daniel C. M.、Johnson Michael D.、Kino Motoki、Hada Kazuhiro、et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 912 Issue: 1 Pages: 35-35
- DOI
  10.3847/1538-4357/abf117
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-18K13594
[Journal Article] The radio-loud narrow-line Seyfert 1 galaxy 1H 0323+342 in a galaxy merger2020
- Author(s)
  Doi, Akihiro; Kino, Motoki; Kawakatu, Nozomu; Hada, Kazuhiro
- Journal Title
  
  Monthly Notices of the Royal Astronomical Society
  
  Volume: 496 Issue: 2 Pages: 1757-1765
- DOI
  10.1093/mnras/staa1525
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K03918, KAKENHI-PROJECT-20K04020, KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-18K03656
[Journal Article] The Two-sided Jet Structures of NGC 1052 at Scales from 300 to 4 × 107 Schwarzschild Radii2020
- Author(s)
  Nakahara, Satomi; Doi, Akihiro; Murata, Yasuhiro; Nakamura, Masanori; Hada, Kazuhiro; Asada, Keiichi; Sawada-Satoh, Satoko; Kameno, Seiji
- Journal Title
  
  The Astronomical Journal
  
  Volume: 159 Issue: 1 Pages: 14-14
- DOI
  10.3847/1538-3881/ab465b
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03712, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-20K04020
[Journal Article] Linear polarization in the nucleus of M87 at 7 mm and 1.3 cm2020
- Author(s)
  Kravchenko E.、Giroletti M.、Hada K.、Meier D. L.、Nakamura M.、Park J.、Walker R. C.
- Journal Title
  
  Astronomy & Astrophysics
  
  Volume: 637 Pages: L6-L6
- DOI
  10.1051/0004-6361/201937315
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Journal Article] Millimeter-VLBI Detection and Imaging of the Gravitationally Lensed γ-Ray Blazar JVAS B0218+3572020
- Author(s)
  Hada Kazuhiro、Niinuma Kotaro、Sitarek Julian、Spingola Cristiana、Hirano Ayumi
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 901 Issue: 1 Pages: 2-2
- DOI
  10.3847/1538-4357/abaab1
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943
[Journal Article] First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole2019
- Author(s)
  The Event Horizon Telescope Collaboration、Kawashima Tomohisa、 et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 875 Issue: 1 Pages: L1-L1
- DOI
  10.3847/2041-8213/ab0ec7
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-17J08829, KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-19K14761, KAKENHI-PROJECT-18KK0090, KAKENHI-PLANNED-17H06363, KAKENHI-PROJECT-18H01245, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-15H05694, KAKENHI-ORGANIZER-17H06357
[Journal Article] First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring2019
- Author(s)
  The Event Horizon Telescope Collaboration、Kawashima Tomohisa、 et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 875 Issue: 1 Pages: L5-L5
- DOI
  10.3847/2041-8213/ab0f43
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-17J08829, KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-19K14761, KAKENHI-PROJECT-18KK0090, KAKENHI-PLANNED-17H06363, KAKENHI-PROJECT-18H01245, KAKENHI-PROJECT-19H01943, KAKENHI-ORGANIZER-17H06357
[Journal Article] Faraday Rotation in the Jet of M87 inside the Bondi Radius: Indication of Winds from Hot Accretion Flows Confining the Relativistic Jet2019
- Author(s)
  Park Jongho、Hada Kazuhiro、Kino Motoki、Nakamura Masanori、Ro Hyunwook、Trippe Sascha
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 871 Issue: 2 Pages: 257-257
- DOI
  10.3847/1538-4357/aaf9a9
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721
[Journal Article] Jet kinematics of the quasar 4C+21.35 from observations with the KaVA very long baseline interferometry array2019
- Author(s)
  Lee Taeseok、Trippe Sascha、Kino Motoki et al.
- Journal Title
  
  Monthly Notices of the Royal Astronomical Society
  
  Volume: 486 Issue: 2 Pages: 2412-2421
- DOI
  10.1093/mnras/stz970
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943
[Journal Article] First M87 Event Horizon Telescope Results. II. Array and Instrumentation2019
- Author(s)
  The Event Horizon Telescope Collaboration、Kawashima Tomohisa、 et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 875 Issue: 1 Pages: L2-L2
- DOI
  10.3847/2041-8213/ab0c96
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-17J08829, KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-19K14761, KAKENHI-PROJECT-18KK0090, KAKENHI-PLANNED-17H06363, KAKENHI-PROJECT-19H01943, KAKENHI-PROJECT-15H05694, KAKENHI-ORGANIZER-17H06357
[Journal Article] First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole2019
- Author(s)
  The Event Horizon Telescope Collaboration、Kawashima Tomohisa、 et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 875 Issue: 1 Pages: L4-L4
- DOI
  10.3847/2041-8213/ab0e85
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-17J08829, KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-19K14761, KAKENHI-PLANNED-17H06363, KAKENHI-ORGANIZER-17H06357
[Journal Article] Relativistic Jets from AGN Viewed at Highest Angular Resolution2019
- Author(s)
  Hada Kazuhiro
- Journal Title
  
  Galaxies
  
  Volume: 8 Issue: 1 Pages: 1-1
- DOI
  10.3390/galaxies8010001
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-19H01943
[Journal Article] Stable Radio Core of the Blazar Mrk 501 during High-energy Active State in 20122019
- Author(s)
  Koyama Shoko、Kino Motoki、Doi Akihiro、Niinuma Kotaro、Giroletti Marcello、Paneque David、Akiyama Kazunori、Giovannini Gabriele、Zhao Guang-Yao、Ros Eduardo、Kataoka Jun、Orienti Monica、Hada Kazuhiro、Nagai Hiroshi、Isobe Naoki、Kobayashi Hideyuki、Honma Mareki、Lico Rocco
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 884 Issue: 2 Pages: 132-132
- DOI
  10.3847/1538-4357/ab4260
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943
[Journal Article] First M87 Event Horizon Telescope Results. III. Data Processing and Calibration2019
- Author(s)
  The Event Horizon Telescope Collaboration、Kawashima Tomohisa、 et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 875 Issue: 1 Pages: L3-L3
- DOI
  10.3847/2041-8213/ab0c57
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-17J08829, KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-19K14761, KAKENHI-PROJECT-18KK0090, KAKENHI-PLANNED-17H06363, KAKENHI-PROJECT-19H01943, KAKENHI-ORGANIZER-17H06357
[Journal Article] The Cygnus A Jet: Parabolic Streamlines up to Kiloparsec Scales2019
- Author(s)
  Nakahara Satomi、Doi Akihiro、Murata Yasuhiro、Nakamura Masanori、Hada Kazuhiro、Asada Keiichi
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 878 Issue: 1 Pages: 61-61
- DOI
  10.3847/1538-4357/ab1b0e
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H01943
[Journal Article] Kinematics of the M87 Jet in the Collimation Zone: Gradual Acceleration and Velocity Stratification2019
- Author(s)
  Park Jongho、 Hada Kazuhiro、Kino Motoki et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 887 Issue: 2 Pages: 147-147
- DOI
  10.3847/1538-4357/ab5584
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-19H01943
[Journal Article] M87 black hole mass and spin estimate through the position of the jet boundary shape break2019
- Author(s)
  Nokhrina E E、Gurvits L I、Beskin V S、Nakamura M、Asada K、Hada K
- Journal Title
  
  Monthly Notices of the Royal Astronomical Society
  
  Volume: 489 Issue: 1 Pages: 1197-1205
- DOI
  10.1093/mnras/stz2116
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-19H01943
[Journal Article] The Size, Shape, and Scattering of Sagittarius A* at 86 GHz: First VLBI with ALMA2019
- Author(s)
  Issaoun S.、Johnson M. D.、Blackburn L. et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 871 Issue: 1 Pages: 30-30
- DOI
  10.3847/1538-4357/aaf732
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18KK0090, KAKENHI-PROJECT-18H03721
[Journal Article] First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole2019
- Author(s)
  The Event Horizon Telescope Collaboration、Kawashima Tomohisa、 et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 875 Issue: 1 Pages: L6-L6
- DOI
  10.3847/2041-8213/ab1141
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13594, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-17J08829, KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-19K14761, KAKENHI-PROJECT-18KK0090, KAKENHI-PLANNED-17H06363, KAKENHI-PROJECT-19H01943, KAKENHI-ORGANIZER-17H06357
[Journal Article] A new solution to the plasma starved event horizon magnetosphere. Application to the forked jet in M872018
- Author(s)
  Punsly B.、Hardcastle M.、Hada K.
- Journal Title
  
  Astronomy & Astrophysics
  
  Volume: 614 Pages: A104-A104
- DOI
  10.1051/0004-6361/201732215
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13592
[Journal Article] Fast-spinning Black Holes Inferred from Symmetrically Limb-brightened Radio Jets2018
- Author(s)
  Takahashi Kazuya、Toma Kenji、Kino Motoki、Nakamura Masanori、Hada Kazuhiro
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 868 Issue: 2 Pages: 82-82
- DOI
  10.3847/1538-4357/aae832
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18KK0090, KAKENHI-ORGANIZER-17H06357, KAKENHI-PROJECT-18H03721
[Journal Article] VERA monitoring of the radio jet 3C?84 in the period of 2007?2013: Detection of non-linear motion2018
- Author(s)
  Hiura Koichiro、Nagai Hiroshi、Kino Motoki、Niinuma Kotaro、Sorai Kazuo、Chida Hikaru、Akiyama Kazunori、D’Ammando Filippo、Giovannini Gabriele、Giroletti Marcello、Hada Kazuhiro、Honma Mareki、Koyama Shoko、Orienti Monica、Orosz Gabor、Sawada-Satoh Satoko
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: 70 Issue: 5
- DOI
  10.1093/pasj/psy078
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-15K17619, KAKENHI-PROJECT-18K13592
[Journal Article] Revealing the Nature of Blazar Radio Cores through Multifrequency Polarization Observations with the Korean VLBI Network2018
- Author(s)
  Park Jongho、Kam Minchul、Trippe Sascha、Kang Sincheol、Byun Do-Young、Kim Dae-Won、Algaba Juan-Carlos、Lee Sang-Sung、Zhao Guang-Yao、Kino Motoki、Shin Naeun、Hada Kazuhiro、Lee Taeseok、Oh Junghwan、Hodgson Jeffrey A.、Sohn Bong Won
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 860 Issue: 2 Pages: 112-112
- DOI
  10.3847/1538-4357/aac490
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18K13592
[Journal Article] Hitomi X-ray studies of giant radio pulses from the Crab pulsar2018
- Author(s)
  Hitomi Collaboration, Aya Bamba, et al.
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: 70 Issue: 2 Pages: 15-15
- DOI
  10.1093/pasj/psx083
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K05107, KAKENHI-PROJECT-16K05296, KAKENHI-PROJECT-17K05393, KAKENHI-PROJECT-25400236, KAKENHI-PROJECT-16K13787, KAKENHI-PROJECT-16K13788, KAKENHI-PROJECT-16K17667, KAKENHI-PUBLICLY-16H00949, KAKENHI-PROJECT-25287042, KAKENHI-PLANNED-25120007, KAKENHI-PROJECT-26220703, KAKENHI-PROJECT-15H02070, KAKENHI-PROJECT-15H02090, KAKENHI-PROJECT-17H01116, KAKENHI-PROJECT-16J02333, KAKENHI-PROJECT-16J06773, KAKENHI-PROJECT-15K17610, KAKENHI-PROJECT-26800144, KAKENHI-PROJECT-15J02737, KAKENHI-PROJECT-15K05069, KAKENHI-PROJECT-16H02198, KAKENHI-PROJECT-17K05392, KAKENHI-PROJECT-18H01256
[Journal Article] Evidence of Jet?Clump Interaction: A Flip of the Radio Jet Head of 3C 842018
- Author(s)
  Kino M.、Wajima K.、Kawakatu N.、Nagai H.、Orienti M.、Giovannini G.、Hada K.、Niinuma K.、Giroletti M.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 864 Issue: 2 Pages: 118-118
- DOI
  10.3847/1538-4357/aad6e3
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-15K17619, KAKENHI-PROJECT-16K17670, KAKENHI-PROJECT-18K13592
[Journal Article] A wide and collimated radio jet in 3C84 on the scale of a few hundred gravitational radii2018
- Author(s)
  Giovannini, G., 他計25名（M. Honma 14番目）
- Journal Title
  
  Nature Astronomy
  
  Volume: in press Issue: 6 Pages: 472-477
- DOI
  10.1038/s41550-018-0431-2
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PLANNED-25120007, KAKENHI-INTERNATIONAL-15K21718, KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-15K17619, KAKENHI-PROJECT-18K13592
[Journal Article] Parabolic Jets from the Spinning Black Hole in M872018
- Author(s)
  Nakamura Masanori、Asada Keiichi、Hada Kazuhiro、Pu Hung-Yi、Noble Scott、Tseng Chihyin、Toma Kenji、Kino Motoki et al.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 868 Issue: 2 Pages: 146-146
- DOI
  10.3847/1538-4357/aaeb2d
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03656, KAKENHI-PROJECT-18K03709, KAKENHI-PROJECT-18KK0090, KAKENHI-ORGANIZER-17H06357, KAKENHI-PROJECT-18H03721, KAKENHI-PROJECT-18H01245
[Journal Article] Collimation, Acceleration, and Recollimation Shock in the Jet of Gamma-Ray Emitting Radio-loud Narrow-line Seyfert 1 Galaxy 1H0323+3422018
- Author(s)
  Hada Kazuhiro、Doi Akihiro、Wajima Kiyoaki、D’Ammando Filippo、Orienti Monica、Giroletti Marcello、Giovannini Gabriele、Nakamura Masanori、Asada Keiichi
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 860 Issue: 2 Pages: 141-141
- DOI
  10.3847/1538-4357/aac49f
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644, KAKENHI-PROJECT-18K13592
[Journal Article] Pilot KaVA monitoring on the M 87 jet: Confirming the inner jet structure and superluminal motions at sub-pc scales2017
- Author(s)
  Hada, Kazuhiro; Sawada-Satoh, Satoko (15番目); 他(計40名)
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: 69 Issue: 4 Pages: 71-80
- DOI
  10.1093/pasj/psx054
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16H02167, KAKENHI-PROJECT-17H01116, KAKENHI-PROJECT-15H03644
[Journal Article] The Structure and Propagation of the Misaligned Jet M872017
- Author(s)
  Hada, Kazuhiro
- Journal Title
  
  Galaxies
  
  Volume: 5 Issue: 1 Pages: 2-9
- DOI
  10.3390/galaxies5010002
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-15H03644, KAKENHI-PROJECT-26800109
[Journal Article] Millimeter VLBI observations of Sgr A* with KaVA and KVN2017
- Author(s)
  Zhao, G.-Y., Kino, M., Cho, I.-J., Akiyama, K., Sohn, B. W., Jung, T., Algaba, J. C., Hada, K., Hagiwara, Y., Hodgson, J., Honma, M., Kawaguchi, N., Koyama, S., Lee, J. A., Lee, T., Niinuma, K., Oh, J., Park, J.-H., Ro, H., Sawada-Satoh, S., Tazaki, F., Trippe, S., Wajima, K., Yoo, H.
- Journal Title
  
  Proceedings of the International Astronomical Union
  
  Volume: 322 Issue: S322 Pages: 56-63
- DOI
  10.1017/s1743921316012497
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Journal Article] Discovery of off-axis jet structure of TeV blazar Mrk501 with mm-VLBI2016
- Author(s)
  Koyama, S., Kino, M., Giroletti, M., Doi, A., Giovannini, G., Orienti, M., Hada, K., Ros, E., Niinuma, K., Nagai, H., Savolainen, T., Krichbaum, T. P., Perez-Torres, M. A.
- Journal Title
  
  Astronomy and Astrophysics
  
  Volume: 586 Pages: 113-122
- DOI
  10.1051/0004-6361/201526541
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042
[Journal Article] ALMA Science Verification Data: Millimeter Continuum Polarimetry of the Bright Radio Quasar 3C 2862016
- Author(s)
  Nagai, H., Nakanishi, K., Paladino, R., Hull, C. L. H., Cortes, P., Moellenbrock, G., Fomalont, E., Asada, K., Hada, K.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 824 Issue: 2 Pages: 132-141
- DOI
  10.3847/0004-637x/824/2/132
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109, KAKENHI-PROJECT-15K17619
[Journal Article] FRB 150418: clues to its nature from European VLBI Network and e-MERLIN observations2016
- Author(s)
  Giroletti, M., Marcote, B., Garrett, M. A.; Paragi, Z., Yang, J., Hada, K., Muxlow, T. W. B., Cheung, C. C.
- Journal Title
  
  Astronomy & Astrophysics
  
  Volume: 593 Pages: 16-19
- DOI
  10.1051/0004-6361/201629172
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Journal Article] Conical Stream of the Two-Sided Jets in NGC 4261 over the Range of 103-109 Schwarzschild Radii2016
- Author(s)
  Nakahara, Satomi; Doi, Akihiro; Murata, Yasuhiro; Hada, Kazuhiro; Nakamura, Masanori; Asada, Keiichi
- Journal Title
  
  Galaxies
  
  Volume: vol. 4, issue 4 Issue: 4 Pages: 80-84
- DOI
  10.3390/galaxies4040080
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-26800109
[Journal Article] High-sensitivity 86GHz(3.5mm) VLBI observations of M87: Deep imaging of the jet base at a resolution of 10 Schwarzschild radii2016
- Author(s)
  Hada, K., Kino, M., Doi, A., Nagai, H., Honma, M., Akiyama, K., Tazaki, F., Lico, R., Giroletti, M., Giovannini, G., Orienti, M., Hagiwara, Y.,
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 817 Issue: 2 Pages: 131-147
- DOI
  10.3847/0004-637x/817/2/131
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PLANNED-25120007
[Journal Article] PRECL: A new method for interferometry imaging from closure phase2016
- Author(s)
  Ikeda S., Tazaki F., Akiyama K., Hada K., Honma M.
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: 68 Issue: 3 Pages: 45-45
- DOI
  10.1093/pasj/psw042
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PLANNED-25120007, KAKENHI-PLANNED-25120008, KAKENHI-PROJECT-26800109
[Journal Article] Determination of central engine position and accretion disk structure in NGC4261 by core shift measurements2015
- Author(s)
  Haga, T., Doi, A., Murata, Y., Sudou, H., Kameno, S., Hada, K.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 807 Issue: 1 Pages: 15-29
- DOI
  10.1088/0004-637x/807/1/15
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042
[Journal Article] VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability2015
- Author(s)
  Niinuma, Kotaro; Lee, Sang-Sung; Kino, Motoki; Sohn, Bong Won; Akiyama, Kazunori et al.
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: 66 Issue: 6 Pages: 103-118
- DOI
  10.1093/pasj/psu104
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-12J07566, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540242, KAKENHI-PROJECT-26800109, KAKENHI-PLANNED-25120007
[Journal Article] 230GHz VLBI observations of M87: Event-horizon-scale structure during an enhanced very-high-energy gamma-ray state in 20122015
- Author(s)
  Akiyama, K., Lu, R.-S, Fish, V. L., Doeleman, S. S., Broderick, A. E., Dexter, J., Hada, K. and 41 co-authors
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 807 Issue: 2 Pages: 150-160
- DOI
  10.1088/0004-637x/807/2/150
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109, KAKENHI-PLANNED-25120007, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042
[Journal Article] Magnetization degree at the jet base of M87 derived from the event horizon telescope data: testing magnetically driven jet paradigm2015
- Author(s)
  Kino, M.; Takahara, F.; Hada, K.; Akiyama, K.; Nagai, H.; Sohn, B. W.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 803 Issue: 1 Pages: 30-30
- DOI
  10.1088/0004-637x/803/1/30
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-12J07566, KAKENHI-PROJECT-24340042, KAKENHI-PLANNED-25120007
[Journal Article] A strong radio brightening at the jet base of M87 during the elevated very-high-energy gamma-ray state in 20122015
- Author(s)
  Hada, K., Giroletti, M., Kino, M., Giovannini, G., D'Ammando, F., Cheung, C. C., Beilicke, M., Nagai, H., Doi, A., Akiyama, K., and 11 coauthors
- Journal Title
  
  Proceedings of the International Astronomical Union, IAU Symposium
  
  Volume: 313 Issue: S313 Pages: 340-345
- DOI
  10.1017/s174392131500246x
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-26800109
[Journal Article] Discovery of a wandering radio jet base after a large X-ray flare in the blazar Markarian 4212015
- Author(s)
  Niinuma, K., Kino, M., Doi, A., Hada, K., Nagai, H., Koyama, S.
- Journal Title
  
  The Astrophysical Journal Letters
  
  Volume: 807 Issue: 1 Pages: 14-18
- DOI
  10.1088/2041-8205/807/1/l14
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042
[Journal Article] Probing Precise Location of Radio Core in TeV Blazar Mrk 501 with VERA at 43 GHz2015
- Author(s)
  Koyama, Shoko; Kino, Motoki; Doi, Akihiro; Niinuma, Kotaro; Hada, Kazuhiro; Nagai, Hiroshi; Honma, Mareki; Akiyama, Kazunori; Giroletti, Marcello; Giovannini, Gabriele; Orienti, Monica; Isobe, Naoki; Kataoka, Jun; Paneque, David; Kobayashi, Hideyuki; Asada, Keiichi
- Journal Title
  
  Publications of the Astronomical Society of Japan
  
  Volume: 未定 Issue: 4
- DOI
  10.1093/pasj/psu144
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-12J07566, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-26800109, KAKENHI-PLANNED-25120007, KAKENHI-PROJECT-24340042
[Journal Article] ソンブレロ銀河中心に潜む巨大ブラックホールの周辺構造2015
- Author(s)
  秦和弘
- Journal Title
  
  物理科学月刊誌パリティ
  
  Volume: 第30巻1号 Pages: 48-49
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26800109
[Journal Article] A strong brightening at the jet base of M87 in the period of the TeV gamma-ray state in 20122015
- Author(s)
  Hada, K., Giroletti, M., Kino, M., Giovannini, G., D'Ammando, F., Cheung, C.C, Beilicke, M., Nagai, H., Doi, A., Akiyama, K., and 11 coauthors
- Journal Title
  
  2014 Fermi Symposium proceedings - eConf C14102.1
  
  Volume: -
- Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26800109
[Journal Article] Very Long Baseline Interferometry observations: the closest look at the cores of AGN2014
- Author(s)
  Giroletti, M., Lico, R., Hada, K., and Giovannini, G.
- Journal Title
  
  Proceedings of the International Astronomical Union, IAU Symposium
  
  Volume: 304 Issue: S304 Pages: 71-77
- DOI
  10.1017/s1743921314003378
- Data Source
  KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-26800109
[Journal Article] A Strong Radio Brightening at the Jet Base of M 87 during the Elevated Very High Energy Gamma-Ray State in 20122014
- Author(s)
  Hada, K.; Giroletti, M.; Kino, M.; Giovannini, G.; D'Ammando, F.; Cheung, C. C.; Beilicke, M.; Nagai, H.; Doi, A.; Akiyama, K.; Honma, M.; Niinuma, K.; Casadio, C.; Orienti, M.; Krawczynski, H.; Gomez, J. L.; Sawada-Satoh, S.; Koyama, S.; Cesarini, A.; Nakahara, S.; Gurwell, M. A.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 788 Issue: 2 Pages: 165-177
- DOI
  10.1088/0004-637x/788/2/165
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-12J07566, KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540242, KAKENHI-PLANNED-25120007, KAKENHI-PROJECT-26800109
[Journal Article] Multi-frequency, multi-epoch VLBI observations of the M87 jet2014
- Author(s)
  Hada, K., Giroletti, M., Giovannini, G., Doi, A., Kino, M., Nagai, H., Honma, M., and Kawaguchi, N.
- Journal Title
  
  Proceedings of the International Astronomical Union, IAU Symposium
  
  Volume: 304 Issue: S304 Pages: 106-107
- DOI
  10.1017/s1743921314003482
- Data Source
  KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-26800109
[Journal Article] Relativistic Electrons and Magnetic Fields of the M87 Jet on the ~10 Schwarzschild Radii Scale2014
- Author(s)
  Kino, M., Takahara, F., Hada, K., and Doi, A.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 786 Issue: 1 Pages: 5-12
- DOI
  10.1088/0004-637x/786/1/5
- Peer Reviewed / Acknowledgement Compliant / Open Access
- Data Source
  KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540240, KAKENHI-PROJECT-26800109
[Journal Article] Limb-brightened Jet of 3C 84 Revealed by the 43 GHz Very-Long-Baseline-Array Observation2014
- Author(s)
  Nagai, H.; Haga, T.; Giovannini, G.; Doi, A.; Orienti, M.; D'Ammando, F.; Kino, M.; Nakamura, M.; Asada, K.; Hada, K.; Giroletti, M.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 785 Issue: 1 Pages: 53-58
- DOI
  10.1088/0004-637x/785/1/53
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540240, KAKENHI-PROJECT-26800109
[Journal Article] The Innermost Collimation Structure of the M87 Jet Down to ~10 Schwarzschild Radii2013
- Author(s)
  Hada, K., Kino, M., Doi, A., Nagai, H., Honma, M., Hagiwara, Y., Giroletti, M., Giovannini, G., Kawaguchi, N.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 775 Issue: 1 Pages: 70-76
- DOI
  10.1088/0004-637x/775/1/70
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540240, KAKENHI-PROJECT-24540242, KAKENHI-PLANNED-25120007
[Journal Article] Evidence for a Nuclear Radio Jet and its Structure down to lsim100 Schwarzschild Radii in the Center of the Sombrero Galaxy (M 104, NGC 4594)2013
- Author(s)
  Hada, K., Doi, A., Nagai, H., Inoue, M., Honma, M., Giroletti, M., Giovannini, G.
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 779 Issue: 1 Pages: 6-18
- DOI
  10.1088/0004-637x/779/1/6
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-13J03094, KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540242, KAKENHI-PLANNED-25120007
[Presentation] VERA-upgrade for EAVN and GVLBI 計画の進捗VI : K-band RF Direct A/D2023
- Author(s)
  小山友明、秦和弘、鈴木駿策、砂田和良、他
- Organizer
  2023年日本天文学会春季年会
- Data Source
  KAKENHI-PROJECT-22H00157
[Presentation] EAVN/VERA 86GHz帯を用いた巨大ブラックホールの観測に向けて2023
- Author(s)
  秦和弘、小川英夫、小山翔子、新沼浩太郎、他
- Organizer
  2023年日本天文学会春季年会
- Data Source
  KAKENHI-PROJECT-22H00157
[Presentation] 巨大ブラックホールの超高解像度電波観測2022
- Author(s)
  秦和弘
- Organizer
  ブラックホールジェット・円盤風研究会
- Invited
- Data Source
  KAKENHI-PROJECT-21H04488
[Presentation] 水沢VERA20 m望遠鏡搭載に向けた67-116 GHz帯2SB回路の検討2022
- Author(s)
  亀山晃、小川英夫、秦和弘、鈴木駿策、小山友明、砂田和良、他
- Organizer
  2022年日本天文学会秋季年会
- Data Source
  KAKENHI-PROJECT-22H00157
[Presentation] 巨大ブラックホールので電波観測最前線2022
- Author(s)
  秦和弘
- Organizer
  28th ICEPP Symposium
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Event Horizon Telescope Observations of Supermassive Black Holes2022
- Author(s)
  秦和弘, EHT Collaboration
- Organizer
  East Asian ALMA Science Workshop 2022
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H04488
[Presentation] VERA広帯域両偏波観測の性能評価報告2022
- Author(s)
  秦和弘
- Organizer
  日本天文学会2022春季年会
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Event Horizon Telescope Observations of M872022
- Author(s)
  秦和弘, EHT Collaboration
- Organizer
  Physics of Relativistic Jets on All Scales, IAU-GA 2022 FM1
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H04488
[Presentation] 巨大ブラックホールので電波観測最前線2022
- Author(s)
  秦和弘
- Organizer
  28th ICEPP Symposium
- Invited
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] 水沢・石垣20 m望遠鏡への搭載に向けた 86 GHz帯受信機の開発2022
- Author(s)
  亀山晃、小川英夫、秦和弘、鈴木駿策、小山友明、砂田和良、他
- Organizer
  2022年度 VLBI懇談会シンポジウム
- Data Source
  KAKENHI-PROJECT-22H00157
[Presentation] Event Horizon Telescope Observations of M872022
- Author(s)
  秦和弘, EHT Collaboration
- Organizer
  hysics of Relativistic Jets on All Scales, IAU-GA 2022 FM1
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H04488
[Presentation] 86GHz帯EAVNに向けたVERA水沢局86GHz常温受信機搭載と試験2022
- Author(s)
  秦和弘、小川英夫、小山友明、鈴木駿策、砂田和良、他
- Organizer
  2022年度 VLBI懇談会シンポジウム
- Data Source
  KAKENHI-PROJECT-22H00157
[Presentation] EAVN AGN Science Working Group 2022 活動報告2022
- Author(s)
  紀基樹、秦和弘、他
- Organizer
  2022年度 VLBI懇談会シンポジウム
- Data Source
  KAKENHI-PROJECT-22H00157
[Presentation] Event Horizon Telescope Observations of Supermassive Black Holes2022
- Author(s)
  Kazuhiro Hada
- Organizer
  East Asian ALMA Science Workshop 2022
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] 巨大ブラックホールの超高解像度電波観測2022
- Author(s)
  秦和弘
- Organizer
  ブラックホールジェット・円盤風研究会
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Event Horizon Telescope Observations of Supermassive Black Holes2022
- Author(s)
  Kazuhiro Hada
- Organizer
  East Asian ALMA Science Workshop 2022
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] 巨大ブラックホールの超高解像度電波観測2022
- Author(s)
  秦和弘
- Organizer
  ブラックホールジェット・円盤風研究会
- Invited
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] High-resolution view of collimaiton and acceleration regions of nearby AGN jets2021
- Author(s)
  Kazuhiro Hada
- Organizer
  Extragalactic jets at all scales (Jets2021)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] ミリ波VLBIによる巨大ブラックホール観測2021
- Author(s)
  秦和弘
- Organizer
  (サブ)ミリ波単一鏡の革新で挑む、天文学の未解決問題
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] ミリ波VLBIによる巨大ブラックホール観測2021
- Author(s)
  秦和弘
- Organizer
  (サブ)ミリ波単一鏡の革新で挑む、天文学の未解決問題
- Invited
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] High-resolution view of collimaiton and acceleration regions of M87 and nearby AGN jets2021
- Author(s)
  Kazuhiro Hada
- Organizer
  Extragalactic jets at all scales (Jets2021)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] AGN Observations with Next-generation Radio Interferometers2021
- Author(s)
  秦和弘
- Organizer
  Linking the science of large interferometers in the 2030s
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] 超高解像度電波観測で明かすSMBHの実態2021
- Author(s)
  秦和弘
- Organizer
  超巨大ブラックホール研究会：その実態・影響・起源の解明に向けて
- Invited
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] Munti-wavelength Observations of M87"2021
- Author(s)
  Kazuhiro Hada
- Organizer
  Black Hole Astrophysics with VLBI: Multi-Wavelength and Multi-Messenger Era
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] Munti-wavelength Observations of M872021
- Author(s)
  K. Hada
- Organizer
  Black Hole Astrophysics with VLBI: Multi-Wavelength and Multi-Messenger Era
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] High-resolution view of collimaiton and acceleration regions of nearby AGN jets2021
- Author(s)
  秦和弘
- Organizer
  Extragalactic jets at all scales (Jets2021)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21H04488
[Presentation] AGN Observations with Next-generation Radio Interferometers2021
- Author(s)
  秦和弘
- Organizer
  Linking the science of large interferometers in the 2030s
- Invited
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] JCMT-VLBI超高解像度ミリ波観測で探る超巨大ブラックホール2021
- Author(s)
  秦和弘
- Organizer
  ワークショップ北半球で口径最大焦点面装置とっても充実サブミリ波単一鏡 JCMTを使ってみよう and 使い倒そう
- Invited
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] JCMT-VLBI超高解像度ミリ波観測で探る超巨大ブラックホール2021
- Author(s)
  秦和弘
- Organizer
  ワークショップ北半球で口径最大焦点面装置とっても充実サブミリ波単一鏡 JCMTを使ってみよう
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] 超高解像度電波観測で明かすSMBHの実態2021
- Author(s)
  秦和弘
- Organizer
  超巨大ブラックホール研究会：その実態・影響・起源の解明に向けて
- Invited
- Data Source
  KAKENHI-PROJECT-21H04488
[Presentation] MWL updates on M87 and AGN: Low-energy (radio/mm) perspective2020
- Author(s)
  K. Hada
- Organizer
  EHT Collaboration Meeting 2020
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Collimation, acceleration and recollimation shock in the jet of gamma-ray emitting NLS1 galaxy 1H0323+3422020
- Author(s)
  Hada, K.
- Organizer
  Active Galactic Nucleus Jets in the Event Horizon Telescope Era
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] WL updates on M87 and AGN: Low-energy (radio/mm) perspective2020
- Author(s)
  Kazuhiro Hada
- Organizer
  EHT Collaboration Meeting 2020
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] Collimation, acceleration and recollimation shock in the jet of gamma-ray emitting NLS1 galaxy 1H0323+3422020
- Author(s)
  Hada, K.
- Organizer
  Active Galactic Nucleus Jets in the Event Horizon Telescope Era
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] イベントホライズンテレスコープによるブラックホールシャドウ初撮影2020
- Author(s)
  秦和弘
- Organizer
  光産業技術シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Event Horizon Telescopeによるブレーザー3C279の20マイクロ秒角スケールイメージング2020
- Author(s)
  秦和弘
- Organizer
  日本天文学会 2020秋季年会
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] Event Horizon Telescopeによるブレーザー3C279の20マイクロ秒角スケールイメージング2020
- Author(s)
  秦和弘
- Organizer
  日本天文学会2020 秋季年会
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] 日韓VLBI による、43GHz帯偏波 VLBI試験観測経過報告及び活動銀河核ジェット収束機構の研究2019
- Author(s)
  萩原喜昭、河野祐介、鈴木駿策、秦和弘、小山友明、宇賀裕哉、松枝知佳 (国立天文台)、藤沢健太、新沼浩太郎 (山口大)、嶺重慎 (京都大)、米倉覚則 (茨城大)、笹田真人 (広島大)
- Organizer
  日本天文学会2019年春季年会
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] M87 First Event Horizon Telescope Results and The East Asian VLBI Network2019
- Author(s)
  Hada, K.
- Organizer
  1st mini-workshop on compact objects and multi-wave emission, Urumqi
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] イベント・ホライズン・テレスコープによるブラックホールシャドウ初撮影2019
- Author(s)
  秦和弘
- Organizer
  日本天文教育普及研究会総会
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] EHT による M87*の観測成果 IV:画像化方法の評価とリング構造の抽出2019
- Author(s)
  田崎文得、秋山和徳、森山小太郎、小山翔子、笹田真人、池田思朗、永井洋、本間希樹、秦和弘、沖野大貴、浅田圭一、水野陽介、EHT Collaboration
- Organizer
  日本天文学会2019秋
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Overview of Multi-wavelength Working Group Status2019
- Author(s)
  Hada, K.
- Organizer
  EHT Collaboration Meeting 2019
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Expanding AGN Studies with EAVN and TNRT2019
- Author(s)
  Hada, K.
- Organizer
  NARIT-NAOJ Collaboration Meeting 2019
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] センチ波によるAGN観測と東アジアVLBI2019
- Author(s)
  秦和弘
- Organizer
  SKA Japanシンポジウム 2019
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Results from EATING VLBI Observations for M872019
- Author(s)
  Hada, K.
- Organizer
  EATING VLBI Workshop 2019
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] M87-EHT-2017キャンペーンに同期した東アジアVLBIネットワーク観測で迫る、ブラックホール-ジェットコネクション2019
- Author(s)
  秦和弘、崔玉竹、紀基樹、本間希樹、Bong Won Sohn 、EAVN AGN Science Working Group
- Organizer
  日本天文学会2019秋
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Overview of Multi-wavelength Working Group Status2019
- Author(s)
  Hada, K.
- Organizer
  EHT Collaboration meeting 2019
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] M87-EHT-2017キャンペーンに同期した東アジアVLBIネットワーク観測で迫る、ブラックホール-ジェットコネクション2019
- Author(s)
  秦和弘、崔玉竹、紀基樹、本間希樹、Bong Won Sohn、EAVN AGN Science Working Group
- Organizer
  日本天文学会2019秋
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] Results from recent EATING VLBI Observations for M872019
- Author(s)
  Hada, K.
- Organizer
  EATING VLBI Workshop 2019
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Event Horizon Telescopeによるブラックホール観測の初期成果と国際協力2019
- Author(s)
  秦和弘
- Organizer
  国際天文学連合100年記念シンポジウム
- Invited
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] Expanding VLBI in East Asia and AGN Science2019
- Author(s)
  Hada, K.
- Organizer
  East Asia AGN Workshop 2019
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] Introduction of VERA and AGN Science with EAVN2019
- Author(s)
  Hada, K.
- Organizer
  The 1st Malaysian VLBI Workshop
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H01943
[Presentation] EAVN AGN SWGとVERA両偏波化の活動報告2019
- Author(s)
  秦和弘
- Organizer
  17th Mizusawa VLBI Observatory Users Meeting
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] M87 First Event Horizon Telescope Results and The East Asian VLBI Network2019
- Author(s)
  Hada, K.
- Organizer
  1st mini-workshop on compact objects and multi-wave emission, Urumqi
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] EHT による M87*の観測成果 IV:画像化方法の評価とリング構造の抽出2019
- Author(s)
  田崎文得、秋山和徳、森山小太郎、小山翔子、笹田真人、池田思朗、永井洋、本間希樹、秦和弘、沖野大貴、浅田圭一、水野陽介、EHT Collaboration
- Organizer
  日本天文学会2019秋
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] Current status of EAVN-EHT campaign 2017-20182018
- Author(s)
  Hada, K.
- Organizer
  East Asia VLBI Workshop 2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13592
[Presentation] EAVN observations near-in-time with EHT for M87 in 20172018
- Author(s)
  Cui, Y., Hada, K., Honma, M.
- Organizer
  East Asia VLBI Workshop 2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13592
[Presentation] Observations of nearby relativistic jets with EAVN and EATING VLBI2018
- Author(s)
  Hada, K.
- Organizer
  Perseus in Sicily: from black hole to cluster outskirt IAU 342
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13592
[Presentation] M87 at low/radio frequencies2018
- Author(s)
  Hada, K.
- Organizer
  EHT Collaboration Meeting 2018
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0090
[Presentation] M87 at low frequencies2018
- Author(s)
  Hada, K. and Markoff, S.
- Organizer
  EHT Collaboration Meeting 2018
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13592
[Presentation] Collimation, Acceleration, and Recollimation Shock in the Jet of Gamma-Ray Emitting Radio-loud Narrow-line Seyfert 1 Galaxy 1H0323+3422018
- Author(s)
  Hada, K.
- Organizer
  Half a century of blazars and beyond
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13592
[Presentation] VERA43GHz帯両偏波化とKaVA偏波試験観測の進捗状況2018
- Author(s)
  萩原喜昭、科研費研究チーム(河野祐介、鈴木駿策、秦和弘、小山友明、宇賀裕哉、藤澤健太、新沼浩太郎、米倉覚則、笹田真人)
- Organizer
  2018年度VLBI懇談会シンポジウム
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] EAVNステータス20182018
- Author(s)
  秦和弘
- Organizer
  水沢VLBI観測所ユーザーズミーティング2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13592
[Presentation] Expanding VLBI in East Asia and AGN Science2018
- Author(s)
  Hada, K.
- Organizer
  EVN Symposium 2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K13592
[Presentation] VERA 43GHz帯用両偏波受信システムの開発と活動銀河核ジェットの生成・収束機構の研究2018
- Author(s)
  萩原喜昭、河野祐介、鈴木駿策、秦和弘、小山友明、宇賀裕哉、松枝知佳 (国立天文台)、藤澤健太、新沼浩太郎 (山口大)、嶺重慎 (京都大)、米倉覚則 (茨城大)、笹田真人 (広島大)
- Organizer
  日本天文学会2018年秋季年会
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] The East Asia VLBI Network2017
- Author(s)
  Kazuhiro Hada
- Organizer
  Black Hole Astrophysics with VLBI - Past, Present and Future
- Place of Presentation
  国立天文台 (三鷹市)
- Year and Date
  2017-03-27
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] 高感度VLBI電波観測によるM87ジェットのspine-sheath構造の検出2017
- Author(s)
  秦和弘
- Organizer
  日本天文学会2017春季年会
- Place of Presentation
  九州大学伊都キャンパス（福岡県、福岡市）
- Year and Date
  2017-03-15
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] 高感度VLBI電波観測によるM87ジェットのspine-sheath構造の検出2017
- Author(s)
  秦和弘
- Organizer
  日本天文学会2017年春季年会
- Place of Presentation
  九州大学伊都キャンパス (福岡市)
- Year and Date
  2017-03-15
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] 高解像度電波観測による活動銀河ジェットの研究2017
- Author(s)
  秦和弘
- Organizer
  日本天文学会2017春季年会
- Place of Presentation
  九州大学伊都キャンパス（福岡県、福岡市）
- Year and Date
  2017-03-15
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] An improved view of the M87 jet: radio imaging of the spine-sheath structure2017
- Author(s)
  Hada, K.
- Organizer
  Challenges of AGN Jets
- Place of Presentation
  国立天文台三鷹（東京都、三鷹市）
- Year and Date
  2017-01-17
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] The East Asian VLBI Network2017
- Author(s)
  Hada, K.
- Organizer
  Black Hole Astrophysics with VLBI - Past, Present and Future -
- Place of Presentation
  国立天文台三鷹（東京都、三鷹市）
- Year and Date
  2017-03-27
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] 超高解像度で電波撮像する巨大ブラックホールとジェット2016
- Author(s)
  秦和弘
- Organizer
  ブラックホールジェット小研究会
- Place of Presentation
  東北大学青葉山キャンパス（宮城県、仙台市）
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Radio Imaging of M87 at low frequencies2016
- Author(s)
  Hada, K.
- Organizer
  EHT Collaboration meeting 2016
- Place of Presentation
  AC Hotel Boston Cambridge (米国、ボストン)
- Year and Date
  2016-11-29
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] 日韓合同VLBI観測網KaVAによるM87ジェット加速領域の高頻度・高解像度モニター2016
- Author(s)
  秦和弘
- Organizer
  日本天文学会春季年会
- Place of Presentation
  首都大学東京（東京都、八王子市）
- Year and Date
  2016-03-14
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] M87 jet imaged at highest sensitivity: an improved view of the transverse structure2016
- Author(s)
  Hada, K.
- Organizer
  M87 Workshop
- Place of Presentation
  台湾中央研究院（台湾、台北）
- Year and Date
  2016-05-23
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] The Structure and Propagation of the Misaligned Jet M872016
- Author(s)
  Hada, K.
- Organizer
  Blazars through sharp multi-wavelength eyes
- Place of Presentation
  Hotel Pueblo Camino Real（スペイン、マラガ）
- Year and Date
  2016-05-30
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Radio Imaging of M87 at low frequencies2016
- Author(s)
  Kazuhiro Hada
- Organizer
  EHT Collaboration meeting 2016
- Place of Presentation
  ボストン、アメリカ合衆国
- Year and Date
  2016-11-29
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15H03644
[Presentation] Millimeter VLBI with ALMA and Its User Support2016
- Author(s)
  Hada, K.
- Organizer
  ALMA/45m/ASTE Users Meeting 2016
- Place of Presentation
  国立天文台三鷹（東京都、三鷹市）
- Year and Date
  2016-12-19
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Imaging the central <10Rs of the M87 nucleus with high-sensitivity 86GHz VLBI2016
- Author(s)
  Hada, K.
- Organizer
  ALMA Workshop “Ultra-high-resolution observation with phased-ALMA”
- Place of Presentation
  国立天文台三鷹（東京都、三鷹市）
- Year and Date
  2016-01-13
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Report on EAVN test imaging observations and future prospects2016
- Author(s)
  Hada, K.
- Organizer
  The 9th EAVN Workshop
- Place of Presentation
  Forest Moon Hotel (中国、貴陽)
- Year and Date
  2016-11-07
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] EAVNステータス2016
- Author(s)
  秦和弘
- Organizer
  第14回水沢VLBI観測所ユーザーズミーティング
- Place of Presentation
  国立天文台三鷹（東京都、三鷹市）
- Year and Date
  2016-10-03
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] VLBI偏波サイエンスの現状と目標2015
- Author(s)
  秦和弘
- Organizer
  ミリ波VLBIによるブラックホール天文学の野望と展望
- Place of Presentation
  東洋大学（東京都、文京区）
- Year and Date
  2015-07-04
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] KaVA: The KVN and VERA Array2015
- Author(s)
  Hada, K.
- Organizer
  IRA colloquium at INAF-IRA
- Place of Presentation
  Institute of Radio Astronomy (イタリア、ボローニャ)
- Year and Date
  2015-11-23
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Imaging the jet base of M87: witnessing the collimation and acceleration site2015
- Author(s)
  Hada, K.
- Organizer
  8th East-Asia VLBI Workshop
- Place of Presentation
  北海道大学（北海道、札幌市）
- Year and Date
  2015-07-08
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] VLBIで探る超巨大ブラックホール探査の最前線2015
- Author(s)
  秦和弘、秋山和徳
- Organizer
  長野ブラックホール天文教育研究会
- Place of Presentation
  長野高専（長野県、長野市）
- Year and Date
  2015-05-30
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] EVNおよびVLBAを用いたM87ジェットにおける活動的ノットHST-1の長期運動モニター2015
- Author(s)
  秦和弘
- Organizer
  日本天文学会秋季年会
- Place of Presentation
  甲南大学（兵庫県、神戸市）
- Year and Date
  2015-09-09
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Progress report on KaVA M87 monitor project2015
- Author(s)
  秦和弘
- Organizer
  第１３回水沢VLBI観測所ユーザーズミーティング
- Place of Presentation
  国立天文台水沢（岩手県、奥州市）
- Year and Date
  2015-09-24
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] VLBIで探る巨大ブラックホールジェット根元観測の最前線2015
- Author(s)
  秦和弘
- Organizer
  第30回ブラックホール地平面研究会
- Place of Presentation
  山口大学（山口県、山口市）
- Year and Date
  2015-10-10
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Science cases with mmVLBI2015
- Author(s)
  秦和弘
- Organizer
  第13回水沢VLBI観測所ユーザーズミーティング
- Place of Presentation
  国立天文台水沢（岩手県、奥州市）
- Year and Date
  2015-09-24
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] A strong brightening at the jet base of M87 during the elevated very-high-energy gamma-ray state in 20122014
- Author(s)
  Hada, K.
- Organizer
  Bologna High Energy Meeting 2014
- Place of Presentation
  Bologna, Italy
- Year and Date
  2014-04-08
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Core-shift observations of M87 jet
- Author(s)
  Hada, K.
- Organizer
  The International Workshop "Multi-frequency view of AGN core-shift effect"
- Place of Presentation
  Daejeon, Korea
- Year and Date
  2014-12-18 – 2014-12-19
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] A strong brightening at the jet base of M87 in the period of the TeV gamma-ray state in 2012
- Author(s)
  Hada, K.
- Organizer
  Fifth International Fermi Symposium
- Place of Presentation
  Nagoya, Japan
- Year and Date
  2014-10-20 – 2014-10-24
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] AGN jet studies with VLBI in the world
- Author(s)
  秦和弘
- Organizer
  2014年度VLBI懇談会シンポジウム
- Place of Presentation
  国土地理院（茨城県）
- Year and Date
  2014-10-28 – 2014-10-31
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] M87 results from ongoing EATING collaboration
- Author(s)
  Hada, K.
- Organizer
  East Asia to Italy: Nearly Global VLBI
- Place of Presentation
  Bologna, Italy
- Year and Date
  2014-10-14 – 2014-10-15
- Invited
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Continuing EVN monitoring of HST-1 in the jet of M87
- Author(s)
  Hada, K.
- Organizer
  12th European VLBI Network Symposium
- Place of Presentation
  Cagliari, Italy
- Year and Date
  2014-10-07 – 2014-10-10
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] VLBA+GBT at 86GHzによるM87ジェット生成領域の高分解能・高解像度イメージング
- Author(s)
  秦和弘
- Organizer
  2015年日本天文学会春季年会
- Place of Presentation
  大阪大学（大阪府）
- Year and Date
  2015-03-18 – 2015-03-21
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] A strong brightening at the jet base of M87 during the elevated very-high-energy gamma-ray state in 2012
- Author(s)
  Hada, K.
- Organizer
  IAU Symposium 313: Extragalactic jets from every angle
- Place of Presentation
  Puerto Ayora, Ecuador
- Year and Date
  2014-09-15 – 2014-09-19
- Data Source
  KAKENHI-PROJECT-26800109
[Presentation] Possible interesting targets for core-shift measurements
- Author(s)
  Hada, K.
- Organizer
  The International Workshop "Multi-frequency view of AGN core-shift effect"
- Place of Presentation
  Daejeon, Korea
- Year and Date
  2014-12-18 – 2014-12-19
- Invited
- Data Source
  KAKENHI-PROJECT-26800109

1. KINO Motoki (70531234)

# of Collaborated Projects: 4 results

# of Collaborated Products: 20 results
2. SASADA MAHITO (10725352)

# of Collaborated Projects: 4 results

# of Collaborated Products: 4 results
3. HONMA Mareki (20332166)

# of Collaborated Projects: 3 results

# of Collaborated Products: 5 results
4. TAZAKI Fumie (10800609)

# of Collaborated Projects: 3 results

# of Collaborated Products: 3 results
5. Niinuma Kotaro (30434260)

# of Collaborated Projects: 3 results

# of Collaborated Products: 4 results
6. Hagiwara Yoshiaki (60399300)

# of Collaborated Projects: 2 results

# of Collaborated Products: 3 results
7. 植村誠 (50403514)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
8. 河野裕介 (00370106)

# of Collaborated Projects: 2 results

# of Collaborated Products: 3 results
9. DOI Akihiro (90403641)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. NOGAMI Daisaku (20332728)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. OYAMA TOMOAKI (70425403)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
12. YONEKURA YOSHINORI (90305665)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
13. MINESHIGE SHIN (70229780)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
14. Kameno Seiji (20270449)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
15. 加藤太一 (20283591)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. 藤澤健太 (70311181)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. 大須賀健 (90386508)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
18. 當真賢二 (70729011)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. 高橋博之 (80613405)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
20. 小川英夫 (20022717)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
21. 小山翔子 (20909759)

# of Collaborated Projects: 1 results

# of Collaborated Products: 5 results
22. 永井洋 (00455198)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
23. 深沢泰司 (60272457)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
24. GIOVANNINI Gabriele

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
25. OSHIMA Tomohito

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
26. AKIYAMA Kazunori

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
27. SUZUKI SYUNSAKU

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
28. KAWASHIMA TOMOHISA

# of Collaborated Projects: 0 results

# of Collaborated Products: 7 results
29. KAWAKATU Nozomu

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
30. 藤沢健太

# of Collaborated Projects: 0 results

# of Collaborated Products: 3 results
31. 野田博文

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
32. 土居明広

# of Collaborated Projects: 0 results

# of Collaborated Products: 7 results
33. 馬場彩

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Hada Kazuhiro 秦 和弘

Research Projects

Research Products

Co-Researchers

Understanding the formation mechanisms of supermassive black holes jets using high-resolution and high-cadence millimeter VLBI observationsPrincipal Investigator

Principal Investigator

Project Period (FY)

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Research Institution

超大規模計算と超高精度観測で解き明かすブラックホールジェットの駆動機構と多様性

Principal Investigator

Project Period (FY)

Research Category

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Research Institution

Clarifying magnetic fields in AGN jets by radio and optical polarimetry together with VLBI images

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Probing magnetic fields of supermassive black-hole jets with next-generation international VLBI networksPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Revealing the formation of relativistic jets in supermassive black holes using global VLBI networksPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study of launching mechanism of cosmic jet in the vicinity of super massive black-hole by direct imaging

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Acceleration regions in jets from supermassive black holes probed by a next-generation international VLBI networkPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Approaching the creation mechanism of black hole jet using mm-VLBI polarimetry

Principal Investigator

Project Period (FY)

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Research Institution

Observational study of jet-formation regions in supermassive black holes with a novel VLBI techniquePrincipal Investigator

Principal Investigator

Project Period (FY)

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Research Field

Research Institution

Imaging Super-massive Black Holes with Sparse Modeling

Principal Investigator

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Research Institution

[Journal Article] Super-Resolved Image of M87 Observed with East Asian VLBI Network2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] The Past and Future of East Asia to Italy: Nearly Global VLBI2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Transverse Oscillations of the M87 Jet Revealed by KaVA Observations2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Magnetic Reconnection in Black Hole Magnetospheres: Lepton Loading into Jets, Superluminal Radio Blobs, and Multiwavelength Flares2022

Hada Kazuhiro 秦和弘