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日韓VLBI網で探る巨大ブラックホールからの相対論的ジェット噴流

Research Project

Project/Area Number 24540240
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Astronomy
Research InstitutionJapan Aerospace Exploration Agency

Principal Investigator

紀 基樹  独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 研究員 (70531234)

Co-Investigator(Kenkyū-buntansha) 澤田 聡子  国立天文台, 水沢VLBI観測所, 研究員 (00452631)
永井 洋  国立天文台, チリ観測所, 助教 (00455198)
土居 明広  独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (90403641)
Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Discontinued (Fiscal Year 2012)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsブラックホール / 相対論的ジェット / VLBI / 電波 / 韓国: イタリア / 韓国:イタリア
Research Abstract

まず、昨年度に達成した22GHz対でのジェット噴流のイメージ品質の向上に続き、本年度は43GHz対においても同様の品質向上イメージの取得に成功した。これらの結果は日韓合同アレイのイメージング性能評価のまとめとして論文にまとめた。現在論文投稿中(Niinuma, Lee, Kino et al.)である。
次に、VERAアレイの22GHz帯と43GHz帯両方を用いた密な観測頻度によるジェット運動速度の計測を実行した。その結果、22GHz帯で計測した中心ブラックホールからより遠い一での運動速度よりも、43GHz帯で計測したブラックホールにより近い一でのジェットの運動速度のほうが遅いという観測的示唆を初めて得た。この観測結果は、磁場駆動型ジェット理論モデルが予言する傾向と一致する。この成果は現在論文投稿中である(Hada, Giloretti, Kino et al., 2014, ApJ, submitted)。さらには、VLBI観測データに基づいたジェット根元部分での磁場と相対論的電子のエネルギー密度を推定する理論的方法を新たに提案し、実際にM87ジェット根元の磁場と電子のエネルギー密度を定量的に評価した。本結果は(Kino et al. 2014, ApJ)にて出版した。
日韓合同アレイによる密な観測頻度によるジェット運動速度の観測も、本年度の後半に実行するこができた。現在は観測データの相関処理中である。

Report

(2 results)
  • 2013 Annual Research Report
  • 2012 Research-status Report
  • Research Products

    (30 results)

All 2014 2013 2012

All Journal Article (19 results) (of which Peer Reviewed: 14 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (11 results) (of which Invited: 1 results)

  • [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
      2013 Annual Research 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
      2013 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The TeV blazar Markarian 421 at the highest spatial resolution2013

    • Author(s)
      Blasi, M. G.; Lico, R.; Giroletti, M.; Orienti, M.; Giovannini, G.; Cotton, W.; Edwards, P. G.; Fuhrmann, L.; Krichbaum, T. P.; Kovalev, Y. Y.; Jorstad, S.; Marscher, A.; Kino, M.; Paneque, D.; Perez-Torres, M. A.; Piner, B. G.; Sokolovsky, K. V.
    • Journal Title

      Astronomy & Astrophysics

      Volume: Volume 559 Pages: A75-A75

    • DOI

      10.1051/0004-6361/201321858

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [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

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] VLBI Imagings of a Kilo-Parsec Knot in 3C 3802013

    • Author(s)
      Koyama, S., Kino, M., Nagai, H., Hada, K., Kameno, S., Kobayashi , H.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 65 Issue: 2 Pages: 29-35

    • DOI

      10.1093/pasj/65.2.29

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The GENJI Programme: Gamma-Ray Emitting Notable AGN Monitoring by Japanese VLBI2013

    • Author(s)
      Nagai, Hiroshi; Kino, Motoki; Niinuma, Kotaro; Akiyama, Kazunori; Hada, Kazuhiro; Koyama, Shoko; Orienti, Monica; Hiura, Koichiro; Sawada-Satoh, Satoko; Honma, Mareki et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 65

    • NAID

      40020043151

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ALMA Continuum Spectrum of the M87 Nucleus. Quasi-simultaneous continuum observations at bands-3,6,7, and 92013

    • Author(s)
      Doi, A., Hada, K., Nagai, H., Kino, M., Honma, M., Akiyama, K., Oyama and T., Kono, Y.
    • Journal Title

      EPJ Web of Conferences

      Volume: 61 Pages: 8008-8008

    • DOI

      10.1051/epjconf/20136108008

    • Related Report
      2013 Annual Research Report
  • [Journal Article] VERA monitoring of a blazar OJ 2872013

    • Author(s)
      Sawada-Satoh, S., Akiyama, K., Kino, M., Nagai, H. and Niinuma, K.
    • Journal Title

      EPJ Web of Conferences

      Volume: 61 Pages: 8007-8007

    • DOI

      10.1051/epjconf/20136108007

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Very Long Baseline Polarimetric monitoring at 15 GHz of the TeV blazar Markarian 4212013

    • Author(s)
      Lico, R.; Casadio, C.; Gómez, J. L.; Giroletti, M.; Orienti, M.; Giovannini, G.; Blasi, M. G.; Cotton, W.; Edwards, P. G.; Fuhrmann, L. et al.
    • Journal Title

      EPJ Web of Conferences

      Volume: 61 Pages: 07004-07004

    • DOI

      10.1051/epjconf/20136107004

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Probing the Radio Counterpart of Gamma-ray Flaring Region in 3C 842013

    • Author(s)
      Nagai, H., Orienti, M., Kino, M., Doi, A., Giovannini, G., Asada, K., D'Ammando, F., Haga, T., Giroletti, M., Hada, K.
    • Journal Title

      The European Physical Journal Web of Conferences

      Volume: 61 Pages: 040081-040085

    • DOI

      10.1051/epjconf/20136104008

    • Related Report
      2013 Annual Research Report
  • [Journal Article] Energy densities of magnetic field and relativistic electrons at the inner most region of the M87 jet2013

    • Author(s)
      Kino, M., Takahara, F., Hada, K., Doi, A.
    • Journal Title

      The European Physical Journal Web of Conferences

      Volume: 61 Pages: 010091-010094

    • DOI

      10.1051/epjconf/20136101009

    • Related Report
      2013 Annual Research Report
  • [Journal Article] New Class of Very High Energy y-Ray Emitters: Radio-dark Mini Shells Surrounding Active Galactic Nucleus Jets2013

    • Author(s)
      Kino, et al.
    • Journal Title

      Astrophysical Journal

      Volume: 764 Issue: 2 Pages: 134-139

    • DOI

      10.1088/0004-637x/764/2/134

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Radio and γ-ray follow-up of the exceptionallyhigh-activity state of PKS 1510-089 in 20112013

    • Author(s)
      Monika Orienti
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 428 Issue: 3 Pages: 2418-2429

    • DOI

      10.1093/mnras/sts201

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nuclear Radio Jet from a Low-luminosity Active Galactic Nucleus in NGC 42582013

    • Author(s)
      Doi et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 765

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Very Long Baseline Array Imaging of Parsec-scale Radio Emissions in Nearby Radio-quiet Narrow-line Seyfert 1 Galaxies2013

    • Author(s)
      Doi et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 765

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Radio-to-γ-ray monitoring of the narrow-line Seyfert 1 galaxy PMN J0948 + 0022 from 2008 to 20112012

    • Author(s)
      Foschini et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 548 Pages: 106-120

    • DOI

      10.1051/0004-6361/201220225

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [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

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] "Possible Detection of Apparent Superluminal Inward Motion in Markarian 421 after the Giant X-Ray Flare in 2010 February2012

    • Author(s)
      K. Niinuma, M. Kino, H. Nagai, N. Isobe, K. E. Gabanyi, K. Hada, S. Koyama, K. Asada, T. Oyama, and K. Fujisawa
    • Journal Title

      Astrophysical Journal

      Volume: 759 Issue: 2 Pages: 84-84

    • DOI

      10.1088/0004-637x/759/2/84

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] VLBA monitoring of Mrk 421 at 15 GHz and 24 GHz during 20112012

    • Author(s)
      Lico, Kino, et al.
    • Journal Title

      Astronomy & Astrophysics

      Volume: 545 Pages: 117-125

    • DOI

      10.1051/0004-6361/201219870

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Magnetic field at the jet base in M872014

    • Author(s)
      Kino, M.
    • Organizer
      Understanding relativistic jets with polarimetry and synergetics study from radio to TeV
    • Place of Presentation
      広島大学理学部
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] M87における2012年TeVγ線活動に同期したブラックホール近傍数10シュバルツシルト半径以内からの強い電波増光の検出2014

    • Author(s)
      秦和弘
    • Organizer
      日本天文学会春季年会
    • Place of Presentation
      国際基督教大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] Status report of KaVA AGN sub-WG2013

    • Author(s)
      Kino, M.
    • Organizer
      East Asia VLBI workshop 2013
    • Place of Presentation
      Jeju island
    • Related Report
      2013 Annual Research Report
  • [Presentation] Highlight of AGN study with VLBI2013

    • Author(s)
      Kino, M.
    • Organizer
      4th KVN+VERA Science meeting
    • Place of Presentation
      Jeju island
    • Related Report
      2013 Annual Research Report
  • [Presentation] M87ジェット最深部での磁場と相対論的電子のエネルギー密度比2013

    • Author(s)
      紀基樹
    • Organizer
      日本天文学会秋季年会
    • Place of Presentation
      東北大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] VLBIで探るジェットからの高エネルギー放射領域の位置2012

    • Author(s)
      紀 基樹
    • Organizer
      高エネルギー天体研究会2012
    • Place of Presentation
      首都大学
    • Related Report
      2012 Research-status Report
  • [Presentation] CTAで探る低光度AGNミニシェルからの超高エネルギーγ線2012

    • Author(s)
      紀 基樹
    • Organizer
      特別推進研究研究会・宇宙線研究所共同利用研究会 「高エネルギーガンマ線でみる極限宇宙2012」
    • Place of Presentation
      東京大学宇宙線研
    • Related Report
      2012 Research-status Report
  • [Presentation] CTAで探る低光度AGNミニシェルからの超高エネルギーγ線2012

    • Author(s)
      紀 基樹
    • Organizer
      日本天文学会
    • Place of Presentation
      大分大学
    • Related Report
      2012 Research-status Report
  • [Presentation] AGN observations with KVN + VERA: M87 and Sgr A*2012

    • Author(s)
      M. Kino
    • Organizer
      Eating VLBI
    • Place of Presentation
      CNR/IRA, Bologna, Italy
    • Related Report
      2012 Research-status Report
  • [Presentation] Initial report on AGN jet observations with KVN + VERA: M87 and Sgr A*2012

    • Author(s)
      M. Kino
    • Organizer
      3rd KVN+VERA Science meeting
    • Place of Presentation
      NAOJ, Mizusawa, Japan
    • Related Report
      2012 Research-status Report
  • [Presentation] Initial report on AGN jet observations with KVN + VERA: M87 and Sgr A*2012

    • Author(s)
      M. Kino
    • Organizer
      East Asia VLBI workshop 2012
    • Place of Presentation
      ASIAA, Taiwan
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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