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

Research Project

Project/Area Number 26800109
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Astronomy
Research InstitutionNational Astronomical Observatory of Japan

Principal Investigator

Hada Kazuhiro  国立天文台, 水沢VLBI観測所, 助教 (60724458)

Research Collaborator HONMA Mareki  国立天文台, 水沢VLBI観測所, 助教 (20332166)
DOI Akihiro  宇宙科学研究所, 助教 (90403641)
KINO Motoki  韓国天文研究院, 上席研究員 (70531234)
GIOVANNINI Gabriele  ボローニャ大学, 教授
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords電波天文学 / 超長基線電波干渉計(VLBI) / 活動銀河核 / ブラックホール / 相対論的ジェット / 超長基線電波干渉計(VLBI)
Outline of Final Research Achievements

Understanding the formation mechanisms of relativistic jets in active galactic nuclei (AGN) is one of central questions in modern astrophysics. In this program, we studied several nearby AGN jets, including M87, by using the multi-frequency phase-referencing VLBI technique. We found that the M87 jet could be powered by the central supermassive black hole with strong magnetic fields. We also found that some other sources, in contrast to M87, could have jets that were launched in the accretion disks. These results suggest that various formation mechanisms are viable in AGN jets depending on their individual properties and surrounding environment.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (65 results)

All 2017 2016 2015 2014 Other

All Int'l Joint Research (7 results) Journal Article (21 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 17 results,  Open Access: 6 results,  Acknowledgement Compliant: 6 results) Presentation (30 results) (of which Int'l Joint Research: 9 results,  Invited: 15 results) Remarks (7 results)

  • [Int'l Joint Research] 韓国天文宇宙科学研究院/ソウル大学/ヨンセイ大学(韓国)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] 上海天文台(中国)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] 台湾中央研究院(台湾)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Institute of Radio Astronomy in Bologna(イタリア)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Institute of Radio Astronomy in Bologna(イタリア)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] 韓国天文宇宙科学研究院(韓国)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] Max Planck Institute for Radio Astronomy(ドイツ)

    • Related Report
      2015 Research-status Report
  • [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

    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [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

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [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

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [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

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [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

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [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

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [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

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [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

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [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

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [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

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [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

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [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

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [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: -

    • Related Report
      2014 Research-status Report
    • Acknowledgement Compliant
  • [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

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [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

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [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

    • Related Report
      2014 Research-status Report
  • [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

    • Related Report
      2014 Research-status Report
  • [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

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [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

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [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

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [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
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [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
    • Related Report
      2016 Annual Research Report
    • Invited
  • [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
    • Related Report
      2016 Annual Research Report
  • [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
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [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
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [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
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [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
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [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
    • Related Report
      2016 Annual Research Report
  • [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
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [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
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [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
    • Related Report
      2015 Research-status Report
  • [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
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [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)
    • Related Report
      2016 Annual Research Report
  • [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
    • Related Report
      2015 Research-status Report
    • Invited
  • [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
    • Related Report
      2015 Research-status Report
    • Invited
  • [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
    • Related Report
      2015 Research-status Report
  • [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
    • Related Report
      2015 Research-status Report
    • Invited
  • [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
    • Related Report
      2015 Research-status Report
  • [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
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [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
    • Related Report
      2015 Research-status Report
    • Invited
  • [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
    • Related Report
      2015 Research-status Report
    • Invited
  • [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2015

    • 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
    • Related Report
      2014 Research-status Report
  • [Presentation] Core-shift observations of M87 jet2014

    • 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
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Possible interesting targets for core-shift measurements2014

    • 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
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] AGN jet studies with VLBI in the world2014

    • 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
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] A strong brightening at the jet base of M87 in the period of the TeV gamma-ray state in 20122014

    • Author(s)
      Hada, K.
    • Organizer
      Fifth International Fermi Symposium
    • Place of Presentation
      Nagoya, Japan
    • Year and Date
      2014-10-20 – 2014-10-24
    • Related Report
      2014 Research-status Report
  • [Presentation] M87 results from ongoing EATING collaboration2014

    • 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
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Continuing EVN monitoring of HST-1 in the jet of M872014

    • Author(s)
      Hada, K.
    • Organizer
      12th European VLBI Network Symposium
    • Place of Presentation
      Cagliari, Italy
    • Year and Date
      2014-10-07 – 2014-10-10
    • Related Report
      2014 Research-status Report
  • [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
      IAU Symposium 313: Extragalactic jets from every angle
    • Place of Presentation
      Puerto Ayora, Ecuador
    • Year and Date
      2014-09-15 – 2014-09-19
    • Related Report
      2014 Research-status Report
  • [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
    • Related Report
      2014 Research-status Report
  • [Remarks] 滝脇氏と秦氏が日本天文学会研究奨励賞を受賞

    • URL

      http://www.nao.ac.jp/news/topics/2017/20170328-award.html

    • Related Report
      2016 Annual Research Report
  • [Remarks] 日韓合同電波望遠鏡群で探る巨大ブラックホールジェット ~見えてきた「超光速噴出流」の現場~

    • URL

      http://www.miz.nao.ac.jp/content/pr/pr20160312/c01

    • Related Report
      2015 Research-status Report
  • [Remarks] NRAO Media Tip Sheet

    • URL

      https://public.nrao.edu/news/tip-sheets/2016-feb-tip-sheet

    • Related Report
      2015 Research-status Report
  • [Remarks] 活動銀河M87のガンマ線フレア、電波でも増光を観測

    • URL

      http://www.astroarts.co.jp/news/2014/09/05m87/index-j.shtml

    • Related Report
      2014 Research-status Report
  • [Remarks] 活動銀河M87の高エネルギーガンマ線フレアにともなう電波増光をキャッチ

    • URL

      http://veraserver.mtk.nao.ac.jp/hilight/2014_hada.html

    • Related Report
      2014 Research-status Report
  • [Remarks] 高エネルギーガンマ線フレアに伴う電波増光を検出…M87で発生

    • URL

      http://response.jp/article/2014/09/08/231867.html

    • Related Report
      2014 Research-status Report
  • [Remarks] 公益財団法人 井上科学振興財団 平成26年度(第31回)井上研究奨励賞

    • URL

      http://www.inoue-zaidan.or.jp/f-02.html

    • Related Report
      2014 Research-status Report

URL: 

Published: 2014-04-04   Modified: 2022-02-16  

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