• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Ichikawa Kohei  市川 幸平

ORCIDConnect your ORCID iD *help
… Alternative Names

市川 幸平  イチカワ コウヘイ

Less
Researcher Number 40756293
Other IDs
Affiliation (Current) 2022: 東北大学, 学際科学フロンティア研究所, 助教
Affiliation (based on the past Project Information) *help 2018 – 2021: 東北大学, 学際科学フロンティア研究所, 助教
2016: 国立天文台, ハワイ観測所, 特任研究員
2015: 国立天文台, ハワイ観測所, 特別客員研究員
Review Section/Research Field
Principal Investigator
Basic Section 16010:Astronomy-related / Astronomy
Keywords
Principal Investigator
活動銀河核 / 赤外線 / X線 / 超巨大ブラックホール / AGN / ブラックホール / エックス線 / 時間分解能 / 太陽系外縁天体 / 食 … More / 干渉効果 / 月 / 電波 / 電波銀河 / すばる望遠鏡 / 多波長観測 Less
  • Research Projects

    (3 results)
  • Research Products

    (41 results)
  • Co-Researchers

    (16 People)
  •  Rapid supermassive black hole growth revealed by multi-wavelength surveysPrincipal Investigator

    • Principal Investigator
      市川 幸平
    • Project Period (FY)
      2020 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 16010:Astronomy-related
    • Research Institution
      Tohoku University
  •  Revealing the close environment of supermassive black holes using the moonPrincipal Investigator

    • Principal Investigator
      Ichikawa Kohei
    • Project Period (FY)
      2018 – 2020
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 16010:Astronomy-related
    • Research Institution
      Tohoku University
  •  赤外線とX線の両波長観測から探る新しい活動銀河核種族の解明Principal Investigator

    • Principal Investigator
      市川 幸平
    • Project Period (FY)
      2015 – 2016
    • Research Category
      Grant-in-Aid for Research Activity Start-up
    • Research Field
      Astronomy
    • Research Institution
      National Astronomical Observatory of Japan

All 2020 2019 2018 2016 2015

All Journal Article Presentation

  • [Journal Article] Obscuring Fraction of Active Galactic Nuclei Implied by Supernova and Radiative Feedbacks2020

    • Author(s)
      Kawakatu Nozomu、Wada Keiichi、Ichikawa Kohei
    • Journal Title

      The Astrophysical Journal

      Volume: 889 Pages: 84-84

    • DOI

      10.3847/1538-4357/ab5f60

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19K03918, KAKENHI-PROJECT-16H03959, KAKENHI-PROJECT-18K13584
  • [Journal Article] Dust Destruction by Charging: A Possible Origin of Gray Extinction Curves of Active Galactic Nuclei2020

    • Author(s)
      Ryo Tazaki, Kohei Ichikawa, Mitsuru Kokubo
    • Journal Title

      The Astrophysical Journal

      Volume: 892 Pages: 1-6

    • DOI

      10.3847/1538-4357/ab7822

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17J01884, KAKENHI-PROJECT-17J02411, KAKENHI-PROJECT-18K13584
  • [Journal Article] Dust Destruction by Drift-induced Sputtering in Active Galactic Nuclei2020

    • Author(s)
      Tazaki Ryo、Ichikawa Kohei
    • Journal Title

      The Astrophysical Journal

      Volume: 892 Pages: 149-149

    • DOI

      10.3847/1538-4357/ab72f6

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17J02411, KAKENHI-PROJECT-18K13584
  • [Journal Article] Discovery of Dying Active Galactic Nucleus in Arp 187: Experience of Drastic Luminosity Decline within 104 yr2019

    • Author(s)
      Ichikawa Kohei、Ueda Junko、Bae Hyun-Jin、Kawamuro Taiki、Matsuoka Kenta、Toba Yoshiki、Shidatsu Megumi
    • Journal Title

      The Astrophysical Journal

      Volume: 870 Pages: 65-65

    • DOI

      10.3847/1538-4357/aaf233

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K17672, KAKENHI-PROJECT-18K13584, KAKENHI-PROJECT-17J09016, KAKENHI-PROJECT-18J01050
  • [Journal Article] Discovery of a strong ionized-gas outflow in an AKARI-selected ultra-luminous infrared galaxy at $z$ = 0.52019

    • Author(s)
      Xiaoyang Chen, Masayuki Akiyama, Hirofumi Noda, Abdurro'uf, Yoshiki Toba, Issei Yamamura, Toshihiro Kawaguchi, Mitsuru Kokubo, Kohei Ichikawa
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 印刷中 (arXiv:1901.05618) Pages: 1-1

    • DOI

      10.1093/pasj/psz002

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16H03954, KAKENHI-PROJECT-19K14759, KAKENHI-PROJECT-17J01884, KAKENHI-PROJECT-18J01050, KAKENHI-PROJECT-18K13584, KAKENHI-PROJECT-17H06129, KAKENHI-PROJECT-17K05389
  • [Journal Article] NuSTAR Discovery of Dead Quasar Engine in Arp 1872019

    • Author(s)
      Ichikawa Kohei、Kawamuro Taiki、Shidatsu Megumi、Ricci Claudio、Bae Hyun-Jin、Matsuoka Kenta、Shin Jaejin、Toba Yoshiki、Ueda Junko、Ueda Yoshihiro
    • Journal Title

      The Astrophysical Journal

      Volume: 883 Pages: 13-17

    • DOI

      10.3847/2041-8213/ab3ebf

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K14759, KAKENHI-PROJECT-19K14762, KAKENHI-PROJECT-17J09016, KAKENHI-PROJECT-18J01050, KAKENHI-PROJECT-17K05384, KAKENHI-PROJECT-18K13584
  • [Journal Article] A NuSTAR and XMM-Newton Study of the Two Most Actively Star-forming Green Pea Galaxies (SDSS J0749+3337 and SDSS J0822+2241)2019

    • Author(s)
      Kawamuro Taiki、Ueda Yoshihiro、Ichikawa Kohei、Imanishi Masatoshi、Izumi Takuma、Tanimoto Atsushi、Matsuoka Kenta
    • Journal Title

      The Astrophysical Journal

      Volume: 881 Pages: 48-48

    • DOI

      10.3847/1538-4357/ab2bf6

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17J06407, KAKENHI-PROJECT-17J09016, KAKENHI-PROJECT-15K05030, KAKENHI-PROJECT-17K05384, KAKENHI-PROJECT-18K13584, KAKENHI-PLANNED-17H06362
  • [Journal Article] A kilometre-sized Kuiper belt object discovered by stellar occultation using amateur telescopes2019

    • Author(s)
      Arimatsu K.、Tsumura K.、Usui F.、Shinnaka Y.、Ichikawa K.、Ootsubo T.、Kotani T.、Wada T.、Nagase K.、Watanabe J.
    • Journal Title

      Nature Astronomy

      Volume: 3 Pages: 1-1

    • DOI

      10.1038/s41550-018-0685-8

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05381, KAKENHI-PROJECT-17K18789, KAKENHI-PROJECT-18K13584, KAKENHI-PROJECT-18K13606, KAKENHI-PROJECT-18KK0089, KAKENHI-PROJECT-18H01250, KAKENHI-PROJECT-18H01272
  • [Journal Article] BAT AGN Spectroscopic Survey - XI. The covering factor of dust and gas in Swift/BAT Active Galactic Nuclei2019

    • Author(s)
      Ichikawa, K., Ricci, C., Ueda, Y. et al.
    • Journal Title

      The Astrophysics Journal

      Volume: 870 Pages: 31-31

    • DOI

      10.3847/1538-4357/aaef8f

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-17K05384, KAKENHI-PROJECT-18K13584, KAKENHI-ORGANIZER-17H06357, KAKENHI-PROJECT-17F17321, KAKENHI-PROJECT-17J09016
  • [Journal Article] A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). II. Physical Properties derived from the SED Fitting with Optical, Infrared, and Radio Data2019

    • Author(s)
      Toba Yoshiki、Yamashita Takuji、Nagao Tohru、Wang Wei-Hao、Ueda Yoshihiro、Ichikawa Kohei、Kawaguchi Toshihiro、Akiyama Masayuki、Hsieh Bau-Ching、Kajisawa Masaru、Lee Chien-Hsiu、Matsuoka Yoshiki、Noboriguchi Akatoki、Onoue Masafusa、Schramm Malte、Tanaka Masayuki、Komiyama Yutaka
    • Journal Title

      The Astrophysical Journal Supplement

      Volume: 243 Pages: 15-15

    • DOI

      10.3847/1538-4365/ab238d

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K14759, KAKENHI-PROJECT-16H03958, KAKENHI-PROJECT-18J01050, KAKENHI-PROJECT-17K05384, KAKENHI-PROJECT-18K13584, KAKENHI-PROJECT-17H06129, KAKENHI-PROJECT-17K05389
  • [Journal Article] BAT AGN Spectroscopic Survey XIII. The nature of the most luminous obscured AGN in the low-redshift universe2019

    • Author(s)
      Bar R. E., Trakhtenbrot B., Oh K, Koss M. J., Wong O I, Ricci C., Schawinski K., Weigel A. K., Sartori L. F., Ichikawa K., Secrest N. J., Stern D., Pacucci F., Mushotzky R., Powell M. C., Ricci F., Sani E., Smith K. L., Harrison F. A., Lamperti I., Urry C. M.
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 489 Pages: 3073-3092

    • DOI

      10.1093/mnras/stz2309

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Journal Article] Transition of BH feeding from the quiescent regime into star-forming cold disc regime2019

    • Author(s)
      Inayoshi Kohei、Ichikawa Kohei、Ostriker Jeremiah P、Kuiper Rolf
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 486 Pages: 5377-5390

    • DOI

      10.1093/mnras/stz1189

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Journal Article] WISE Discovery of Mid-infrared Variability in Massive Young Stellar Objects2019

    • Author(s)
      Uchiyama Mizuho、Ichikawa Kohei
    • Journal Title

      The Astrophysical Journal

      Volume: 883 Pages: 6-6

    • DOI

      10.3847/1538-4357/ab372e

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Journal Article] The Emission and Distribution of Dust of the Torus of NGC 10682018

    • Author(s)
      Lopez-Rodriguez Enrique、Fuller Lindsay、Alonso-Herrero Almudena、Efstathiou Andreas、Ichikawa Kohei、Levenson Nancy A.、Packham Chris、Radomski James、Almeida Cristina Ramos、Benford Dominic J.、Berthoud Marc、Hamilton Ryan、Harper Doyal、Kov?vcs Attila、Santos Fabio P.、Staguhn J.、Herter Terry
    • Journal Title

      The Astrophysical Journal

      Volume: 859 Pages: 99-99

    • DOI

      10.3847/1538-4357/aabd7b

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Journal Article] The origin of the mid-infrared nuclear polarization of active galactic nuclei2018

    • Author(s)
      Lopez-Rodriguez E、Alonso-Herrero A、Diaz-Santos T、Gonzalez-Martin O、Ichikawa K、Levenson N A、Martinez-Paredes M、Nikutta R、Packham C、Perlman E、Ramos?Almeida C、Rodriguez-Espinosa J M、Telesco C M
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 478 Pages: 2350-2358

    • DOI

      10.1093/mnras/sty1197

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Journal Article] Gravitational Waves from Supermassive Black Hole Binaries in Ultraluminous Infrared Galaxies2018

    • Author(s)
      Inayoshi Kohei、Ichikawa Kohei、Haiman Zoltan
    • Journal Title

      The Astrophysical Journal

      Volume: 863

    • DOI

      10.3847/2041-8213/aad8ad

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Journal Article] Signs of active galactic nucleus quenching in a merger remnant with radio jets2016

    • Author(s)
      K. Ichikawa, J. Ueda, M. Shidatsu, T. Kawamuro, K. Matsuoka
    • Journal Title

      Publication of Astronomical Society of Japan

      Volume: Volume 68, Issue 1

    • DOI

      10.1093/pasj/psv112

    • Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H06831
  • [Journal Article] [OIII]λ5007 and X-ray Properties of a Complete Sample of Hard X-ray Selected AGNs in the Local Universe2015

    • Author(s)
      Ueda, Y. et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 815 Pages: 1-14

    • DOI

      10.1088/0004-637x/815/1/1

    • Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26400228, KAKENHI-PROJECT-15H02070, KAKENHI-PROJECT-15H06831
  • [Presentation] Extremely radio loud galaxies2020

    • Author(s)
      Kohei Ichikawa
    • Organizer
      Subaru/HSC AGN meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] The beginning and ending phase of AGN2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      呉AGN研究会
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Gravitational wave signals from SMBHs in Hy/ULIRGs2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      East Asia high-z galaxy workshop
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Extremely radio-loud AGN discovered by Subaru/HSC2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      Extremely Big Eyes on the Early Universe 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Gravitational Waves from SMBH binaries in U/HyLIRGs2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      EWASS 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] The Covering Factor of Dust and Gas in Swift/BAT Active Galactic Nuclei2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      日本天文学会2019年春季年会
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] WERGS: Optically-faint radio galaxies discovered by Subaru/HSC and VLA/FIRST2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      HSC-eROSITA meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Seeing common or rare AGN with TMT2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      TMT Science Forum 2019
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] The Covering Factor of Dust and Gas in Swift/BAT AGN2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      East Asia AGN workshop 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Complete IR View of Swift/BAT AGN2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      AGN-Starburst meeting 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] IR view of X-ray AGN: The covering factor of gas and dust in Swift/BAT AGN2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      Supermassive black holes: Environment and Evolution
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Discovery of Dying AGN in Arp 187: Experience of Drastic Luminosity Decline within 10^4 yr2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      日本天文学会2019年秋季年会
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Host galaxy properties of pure-IR AGN2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      BASS workshop 2019
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Observation of Supermassive Black Holes2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      SMBH研究推進連絡会
    • Invited
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Obscured SMBH assembly using multi-wavelength and wide-field surveys2019

    • Author(s)
      Kohei Ichikawa
    • Organizer
      Subaru 20: Optical and Infrared Astronomy for the next Decade
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] BASS Survey: The Covering Factor of Dust and Gas in Swift/BAT AGN2018

    • Author(s)
      Kohei Ichikawa
    • Organizer
      TORUS2018
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Extremely radio-loud AGN residing in low-mass galaxies discovered by HSC survey2018

    • Author(s)
      Kohei Ichikawa
    • Organizer
      Formation and evolution of SMBHs
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Looking at drastic AGN luminosity decline in Arp 187 within 10^4 years2018

    • Author(s)
      Kohei Ichikawa
    • Organizer
      5th Galaxy workshop
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] BAT AGN Spectroscopy Survey: The Covering Factor of Dust and Gas in Swift/BAT AGN2018

    • Author(s)
      Kohei Ichikawa
    • Organizer
      NERQUAM 2018
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Dying AGN in Arp 1872018

    • Author(s)
      Kohei Ichikawa
    • Organizer
      ASNY50
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] The complete IR view of the Swift/BAT 70 month AGN catalog2018

    • Author(s)
      Kohei Ichikawa
    • Organizer
      42nd COSPAR Assembly
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K13584
  • [Presentation] Determining the dust torus covering factor using clumpy torus models in IR2015

    • Author(s)
      Kohei Ichikawa
    • Organizer
      Prospects, challenges and evolution of AGN modeling in the Astro-H Era
    • Place of Presentation
      立教大学
    • Year and Date
      2015-10-21
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H06831
  • [Presentation] Sudden Death of AGN in Arp 187?2015

    • Author(s)
      Kohei Ichikawa
    • Organizer
      ALMA workshop “AGN銀河の中心1kpc → 1pcスケールでの質量降着機構の理解に向けて”
    • Place of Presentation
      国立天文台
    • Year and Date
      2015-12-21
    • Data Source
      KAKENHI-PROJECT-15H06831
  • 1.  山下 拓時 (20800759)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 2.  KAWAGUCHI toshihiro
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 3 results
  • 3.  NODA hirofumi
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 4.  AKIYAMA Masayuki
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 2 results
  • 5.  KAWAKATU Nozomu
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 6.  TSUMURA Khoji
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 7.  NAGAO Toru
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 8.  志達 めぐみ
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 2 results
  • 9.  上田 佳宏
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 5 results
  • 10.  今西 昌俊
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 11.  和田 桂一
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 12.  大坪 貴文
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 13.  有松 亘
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 14.  渡辺 潤一
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 15.  OH KYUSEOK
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 3 results
  • 16.  寺島 雄一
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results

URL: 

Are you sure that you want to connect your ORCID iD to this researcher?
* This action can be performed only by the researcher themselves.

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi