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HAGIWARA YOSHIAKI  萩原 喜昭

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HAGIWARA Yoshiaki  萩原 喜昭

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Researcher Number 60399300
Other IDs
Affiliation (Current) 2025: 東洋大学, 文学部, 教授
Affiliation (based on the past Project Information) *help 2025: 東洋大学, 文学部, 教授
2018 – 2021: 東洋大学, 文学部, 教授
2015 – 2017: 東洋大学, 文学部, 准教授
2012 – 2014: 国立天文台, 水沢VLBI観測所, 助教
Review Section/Research Field
Principal Investigator
Basic Section 16010:Astronomy-related / Astronomy
Except Principal Investigator
Basic Section 16010:Astronomy-related / Astronomy
Keywords
Principal Investigator
電波ジェット / 電波天文 / 天文 / 偏波・偏光 / 天体磁場 / 電波天文学 / 天文学 / VLBI / 電波干渉計 / 磁場構造 … More / 超巨大ブラックホール / 活動銀河核 / 磁場 / ジェット / ブラックホール … More
Except Principal Investigator
活動銀河核 / ジェット / VLBI / 電波天文学 / ブラックホール / 位置天文 / 位置天文学 / 降着円盤 / 電波 / 位相補償 / 電波干渉計 / 干渉計 / 天文学 / 銀河 / 活動銀河 Less
  • Research Projects

    (4 results)
  • Research Products

    (33 results)
  • Co-Researchers

    (16 People)
  •  サブミリ波メガメーザーによる超巨大ブラックホール質量及びハッブル定数の精密決定Principal Investigator

    • Principal Investigator
      萩原 喜昭
    • Project Period (FY)
      2025 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 16010:Astronomy-related
    • Research Institution
      Toyo University
  •  Probing magnetic fields of supermassive black-hole jets with next-generation international VLBI networks

    • 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
  •  Approaching the creation mechanism of black hole jet using mm-VLBI polarimetryPrincipal Investigator

    • 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
  •  Precise measurements of black holes for studies of active galactic nuclei

    • Principal Investigator
      DOI AKIHIRO
    • Project Period (FY)
      2012 – 2016
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Astronomy
    • Research Institution
      Japan Aerospace EXploration Agency

All 2019 2018 2017 2016 2015 2013 2012 Other

All Journal Article Presentation

  • [Journal Article] East Asian VLBI Network - Evolution and Future of EAVN2019

    • Author(s)
      Yoshiaki Hagiwara
    • Journal Title

      東洋大学紀要 自然科学篇

      Volume: 63 Pages: 47-55

    • NAID

      120006621787

    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Journal Article] Extragalactic Astronomical Masers - Recent results of sub-millimeter maser observations2019

    • Author(s)
      Yoshiaki Hagiwara
    • Journal Title

      東洋大学文学部紀要 第72集 国際文化コミュニケーション研究

      Volume: 2 Pages: 111-119

    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Journal Article] Searches for H2O Masers toward Narrow-Line Seyfert 1 galaxies2018

    • Author(s)
      Yoshiaki Hagiwara, Akihiro DOi, Kazuya Hachisuka, Shinji Horiuchi
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: - Issue: 3

    • DOI

      10.1093/pasj/psy046

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Journal Article] Space VLBI Astronomy: Current Status and Future Prospects2018

    • Author(s)
      Yoshiaki Hagiwara
    • Journal Title

      JOURNAL OF TOYO UNIVERSITY NATURAL SCIENCE

      Volume: 62 Pages: 33-42

    • NAID

      120006453636

    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Journal Article] Submillimeter Continuum Emission of Active Galactic Nuclei2017

    • Author(s)
      Hagiwara, Yoshiaki
    • Journal Title

      東洋大学紀要 自然科学篇

      Volume: 61 Pages: 79-87

    • NAID

      120006029239

    • Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Journal Article] Extragalactic Astronomical Masers II2017

    • Author(s)
      Hagiwara, Yoshiaki
    • Journal Title

      東洋大学紀要, dialogos, 文学部英語コミュニケーション学科篇

      Volume: 17 Pages: 105-114

    • Data Source
      KAKENHI-PROJECT-15H03644
  • [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] A Search for Submillimeter H2O Masers in Active Galaxies: The Detection of 321 GHZ H2O Maser Emission in NGC 49452016

    • Author(s)
      Hagiwara, Y., Horiuchi, S., Doi, A., Miyoshi, M., Edwards, P. G.
    • Journal Title

      The Astrophysical Journal

      Volume: 827 Issue: 1 Pages: 69-69

    • DOI

      10.3847/0004-637x/827/1/69

    • Peer Reviewed / Acknowledgement Compliant / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H03644, KAKENHI-PROJECT-24340042
  • [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] Water Vapour Maser Emission in the Type 2 Seyfert Galaxy NGC 10682016

    • Author(s)
      Hagiwara, Y.
    • Journal Title

      東洋大学紀要 自然科学篇

      Volume: 60 Pages: 67-75

    • NAID

      120005820156

    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Journal Article] A Fanaroff-Riley Type I Candidate in Narrow-Line Seyfert 1 Galaxy Mrk 12392015

    • Author(s)
      Doi, Akihiro; Wajima, Kiyoaki; Hagiwara, Yoshiaki; Inoue, Makoto
    • Journal Title

      The Astrophysical Journal Letters

      Volume: 798 Issue: 2 Pages: L30-L30

    • DOI

      10.1088/2041-8205/798/2/l30

    • Peer Reviewed / Acknowledgement Compliant / Open Access
    • Data Source
      KAKENHI-PROJECT-24340042
  • [Journal Article] ALMA Multi-line Observations of the IR-bright Merger VV 1142015

    • Author(s)
      Saito, Toshiki; Iono, Daisuke; Yun, Min S.; Ueda, Junko; Nakanishi, Kouichiro; Sugai, Hajime; Espada, Daniel; Imanishi, Masatoshi; Motohara, Kentaro; Hagiwara, Yosiaki; Tateuchi, Ken; Lee, Minju; Kawabe, Ryohei
    • Journal Title

      The Astrophysical Journal

      Volume: 803 Issue: 2 Pages: 60-93

    • DOI

      10.1088/0004-637x/803/2/60

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-15K05030, KAKENHI-PROJECT-14J08134, KAKENHI-PROJECT-23540273, KAKENHI-PLANNED-24103003, KAKENHI-PROJECT-15H02062, KAKENHI-PROJECT-15H02073
  • [Journal Article] High-resolution Imaging of Water Maser Emission in the Active Galaxies NGC 6240 and M512015

    • Author(s)
      Hagiwara, Y., Edwards, P. G.
    • Journal Title

      The Astrophysical Journal

      Volume: 815 Issue: 2 Pages: 124-129

    • DOI

      10.1088/0004-637x/815/2/124

    • Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Journal Article] Current Status of the EAVN Experiments2015

    • Author(s)
      Hagiwara, Y., An, T., Jung, T., Rho, D.-G., Zhang, M., Hao, L., Fujisawa, K., Yonekura, Y., Baan, W., Kim, J., Kobayashi, H.
    • Journal Title

      Publications of The Korean Astronomical Society

      Volume: 30 Pages: 641-643

    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [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] 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] Submillimeter H2O Maser in Circinus Galaxy―a New Probe for the Circumnuclear Region of Active Galactic Nuclei2013

    • Author(s)
      Hagiwara, Yoshiaki; Miyoshi, Makoto; Doi, Akihiro; Horiuchi, Shinji
    • Journal Title

      The Astrophysical Journal Letters

      Volume: Volume 768, Issue 2 Issue: 2 Pages: L38-L38

    • DOI

      10.1088/2041-8205/768/2/l38

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-24340042
  • [Journal Article] Active Galactic Nucleus and Extended Starbursts in a Midstage Merger VV 1142013

    • Author(s)
      Iono, Daisuke; Saito, Toshiki; Yun, Min S.; Kawabe, Ryohei; Espada, Daniel; Hagiwara, Yoshiaki; Imanishi, Masatoshi; Izumi, Takuma; Kohno, Kotaro; Motohara, Kentaro; Nakanishi, Kouichiro; Sugai, Hajime; Tateuchi, Ken; Tamura, Yoichi; Ueda, Junko; Yoshii, Yuzuru
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: Vol.65, No.3

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-24340042
  • [Journal Article] Very Long Baseline Array Imaging of Parsec-scale Radio Emissions in Nearby Radio-quiet Narrow-line Seyfert 1 Galaxies2013

    • Author(s)
      Doi, Nagai, Hagiwara, et al
    • Journal Title

      Astrophysical Journal

      Volume: 765 Issue: 1 Pages: 69-69

    • DOI

      10.1088/0004-637x/765/1/69

    • NAID

      120005373241

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-24340042
  • [Journal Article] VLBI Observations of the Jet in M 87 during the Very High Energy y-Ray Flare in 2010 April2012

    • Author(s)
      Hada, Kino, Nagai, Doi, Hagiwara, et al.
    • Journal Title

      Astrophysical Journal

      Volume: 760 Issue: 1 Pages: 52-57

    • DOI

      10.1088/0004-637x/760/1/52

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-24340042, KAKENHI-PROJECT-24540240, KAKENHI-PROJECT-24540242
  • [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] 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] 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] High-resolution imaging of H2O maser towards the type 2 Seyfert NGC1068 (ポスター発表)2017

    • Author(s)
      Yoshiaki Hagiwara
    • 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] Probing Circumnuclear Region of AGNs with Masers2017

    • Author(s)
      Yoshiaki Hagiwara
    • Organizer
      ALMA Long Baseline Workshop
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Presentation] Probing circumnuclear region of AGN with masers2017

    • Author(s)
      Yoshiaki Hagiwara
    • 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
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Presentation] Recent VLBI Activities in East Asia2016

    • Author(s)
      Yoshiaki Hagiwara
    • Organizer
      マックスプランク研究所 VLBI セミナー
    • Place of Presentation
      マックスプランク研究所 電波天文学、Bonn、ドイツ連邦共和国
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Presentation] 43GHz 帯VERA両偏波化の現状 (口頭発表)2016

    • Author(s)
      萩原喜昭
    • Organizer
      2016年VLBI懇談会シンポジウム
    • Place of Presentation
      山口大学 吉田キャンパス 大学会館
    • Year and Date
      2016-12-27
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Presentation] 水沢・入来局43GHz帯受信機両偏波化に向けて(口頭発表)2015

    • Author(s)
      萩原喜昭 (東洋大学)
    • Organizer
      2015年VLBI懇談会シンポジウム
    • Place of Presentation
      東洋大学 白山キャンパス
    • Year and Date
      2015-12-24
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Presentation] 活動銀河におけるサブミリ波帯 H2O メーザー探査 II(口頭発表)2015

    • Author(s)
      萩原喜昭 (東洋大学)
    • Organizer
      日本天文学会2015年秋季年会
    • Place of Presentation
      甲南大学 岡本キャンパス(兵庫県)
    • Year and Date
      2015-09-09
    • Data Source
      KAKENHI-PROJECT-15H03644
  • [Presentation] 活動銀河におけるサブミリ波帯 H2O メーザー探査 II2015

    • Author(s)
      萩原喜昭, 堀内真司, 土居明広, 三好真
    • Organizer
      日本天文学会2015年秋季年会
    • Place of Presentation
      甲南大学
    • Year and Date
      2015-09-09
    • Data Source
      KAKENHI-PROJECT-24340042
  • [Presentation] 多周波VLBIによる電波銀河M87の中心エンジン近傍10-100シュバルツシルト半径領域におけるジェット形状探査2012

    • Author(s)
      秦和弘,紀基樹,永井洋,土居明広,萩原喜昭
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      大分大学
    • Year and Date
      2012-09-19
    • Data Source
      KAKENHI-PROJECT-24340042
  • [Presentation] VLBA+GBT@86GHzによるM87ジェット生成領域の高分解能・高解像度

    • Author(s)
      秦和弘, 紀基樹, 永井洋, 本間希樹, 秋山和徳, 田崎文得, 萩原喜昭, 土居 明広, G.Giovannini, M.Giroletti
    • Organizer
      日本天文学会
    • Place of Presentation
      国際基督教大学
    • Year and Date
      2015-03-19 – 2015-03-22
    • Data Source
      KAKENHI-PROJECT-24340042
  • 1.  HADA KAZUHIRO (60724458)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 4 results
  • 2.  SASADA MAHITO (10725352)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 3 results
  • 3.  DOI AKIHIRO (90403641)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 8 results
  • 4.  OYAMA TOMOAKI (70425403)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 3 results
  • 5.  HONMA MAREKI (20332166)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 1 results
  • 6.  YONEKURA YOSHINORI (90305665)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 4 results
  • 7.  MINESHIGE SHIN (70229780)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 2 results
  • 8.  NIINUMA KOTARO (30434260)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 3 results
  • 9.  永井 洋 (00455198)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 4 results
  • 10.  紀 基樹 (70531234)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 4 results
  • 11.  河野 裕介 (00370106)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 3 results
  • 12.  藤澤 健太 (70311181)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 13.  田崎 文得 (10800609)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 14.  SUZUKI SYUNSAKU
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 3 results
  • 15.  GIOVANNINI Gabriele
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results
  • 16.  藤沢 健太
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 4 results

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