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Precise estimation of Extragalactic Background Light through GeV-TeV gamma-ray observation for distant blazars

Research Project

Project/Area Number 15K17652
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHiroshima University

Principal Investigator

Yasuyuki Tanaka  広島大学, 宇宙科学センター, 特任助教 (90633941)

Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsガンマ線 / 活動銀河核ジェット / 可視赤外線背景放射 / 活動銀河核 / ジェット
Outline of Final Research Achievements

Extragalactic Background Light (EBL) is known as cosmic optical and infrared background radiation and it is important to understand the origin. We analyzed multi-wavelength data from radio to GeV-TeV gamma-ray band for distant blazars and estimated the intensity of Extragalactic Background Light (EBL). Note that the observed GeV-TeV gamma-ray data are absorbed by annihilation with EBL photons, and hence to derive the intrinsic GeV-TeV spectrum, we need radio, optical, and X-ray data. Our result showed that the inferred EBL level is consistent with previously-obtained theoretical estimation, indicating that no significant contribution from other component such as dark matter is needed to explain the inferred EBL level.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report

Research Products

(39 results)

All 2017 2016 2015 Other

All Int'l Joint Research Journal Article Presentation Book

  • [Int'l Joint Research] SLAC(アメリカ)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Nicolaus Copernicus Astronomical Center/Jagiellonian University(ポーランド)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Naval Research Laboratory/NASA Goddard Space Flight Center/Stanford University(アメリカ)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] Jagiellonian University/Nicolaus Copernicus Astronomical Center(ポーランド)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] 上海天文台(中国)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Disk?Jet Connection in Active Supermassive Black Holes in the Standard Accretion Disk Regime2017

    • Author(s)
      Inoue, Yoshiyuki; Doi, Akihiro; Tanaka, Yasuyuki T.; Sikora, Marek; Madejski, Grzegorz M.
    • Journal Title

      The Astrophysical Journal

      Volume: 840 Pages: 46-46

    • DOI
      10.3847/1538-4357/aa6b57
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A measurement of interstellar polarization and an estimation of Galactic extinction for the direction of the X-ray black hole binary V404_Cygni2017

    • Author(s)
      Itoh, Ryosuke; Tanaka, Yasuyuki T.; Kawabata, Koji S.; Uemura, Makoto; Watanabe, Makoto; Fukazawa, Yasushi; Kanda, Yuka; Akitaya, Hiroshi; Moritani, Yuki; Nakaoka, Tatsuya; Kawabata, Miho; Shiki, Kensei; Yoshida, Michitoshi; Oasa, Yumiko; Takahashi, Jun
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 印刷中 Pages: 130-130

    • DOI
      10.1093/pasj/psw130
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High energy gamma rays from nebulae associated with extragalactic microquasars and ultra-luminous X-ray sources2017

    • Author(s)
      Inoue, Y., Lee, S., Tanaka, Y. T., Kobayashi, S. B.
    • Journal Title

      Astroparticle Physics

      Volume: 90 Pages: 14-14

    • DOI
      10.1016/j.astropartphys.2017.01.012
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] HitomiConstraints on the 3.5 keV Line in the Perseus Galaxy Cluster2017

    • Author(s)
      Aharonian, F. A., Akamatsu, H, Terada, Y. et al (Hitomi collaboration)
    • Journal Title

      Astrophysical Jounal Letters

      Volume: 837 Pages: 15-15

    • DOI
      10.3847/2041-8213/aa61fa
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Systematic Study of Gamma-ray-bright Blazars with Optical Polarization and Gamma-Ray Variability2016

    • Author(s)
      Itoh, R., Nalewajko, K., Fukazawa, Y., Uemura, M., Tanaka, Y.~T., Kawabata, K.~S., Madejski, G.~M., Schinzel, F.~K., Kanda, Y., Shiki, K., Akitaya, H., Kawabata, M., Moritani, Y., Nakaoka, T., Yoshida, M. 他6名
    • Journal Title

      ApJ

      Volume: 833 Pages: 77-77

    • DOI
      10.3847/1538-4357/833/1/77
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Baryon Loading Efficiency and Particle Acceleration Efficiency of Relativistic Jets: Cases for Low Luminosity BL Lacs2016

    • Author(s)
      Inoue, Yoshiyuki; Tanaka, Yasuyuki T.
    • Journal Title

      The Astrophysical Journal

      Volume: 828 Pages: 13-13

    • DOI
      10.3847/0004-637x/828/1/13
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Binary black hole merger rates inferred from luminosity function of ultra-luminous X-ray sources2016

    • Author(s)
      Y. Inoue, Y.T. Tanaka, N. Isobe
    • Journal Title

      MNRAS

      Volume: 461 Pages: 4329-4329

    • DOI
      10.1093/mnras/stw1637
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] The soft gamma-ray detector (SGD) onboard ASTRO-H2016

    • Author(s)
      Shin Watanabe, Yuto Ichinohe (9/42), et al.
    • Journal Title

      SPIE Proceeding

      Volume: 9905 Pages: 13-13

    • DOI
      10.1117/12.2231962
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The ASTRO-H (Hitomi) x-ray astronomy satellite2016

    • Author(s)
      Takahashi, T. et al.
    • Journal Title

      Proceedings of SPIE

      Volume: 9905 Pages: 990510-11

    • DOI
      10.1117/12.2232379
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The quiescent intracluster medium in the core of the Perseus cluster2016

    • Author(s)
      Hitomi Collaboration ; Tsunemi, Hiroshi ; Hayashida, Kiyoshi ; Nakajima, Hiroshi ; and 212 coauthors
    • Journal Title

      Nature

      Volume: 535 Pages: 117-117

    • DOI
      10.1038/nature18627
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] EVN Observations of HESS J1943+213: Evidence for an Extreme TeV BL Lac Object2016

    • Author(s)
      Akiyama K., Stawarz L., Tanaka Y., Nagai H., Giroletti M., Honma M.,
    • Journal Title

      ApJ

      Volume: 823

    • DOI
      10.3847/2041-8205/823/2/l26
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] No Evidence of Intrinsic Optical/Near-Infrared Linear Polarization for V404 Cygni During its Bright Outburst in 2015: Broadband Modeling and Constraint on Jet Parameters2016

    • Author(s)
      Y. T. Tanaka et al.
    • Journal Title

      Astrophysical Journal

      Volume: in press

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] A significant hardening and rising shape detected in the MeV/GeV nuFnu spectrum from the recently-discovered very-high-energy blazar S4 0954+65 during the bright optical flare in 2015 February2016

    • Author(s)
      Y. T. Tanaka et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: in press

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Lower Bound on the Cosmic TeV Gamma-Ray Background Radiation2016

    • Author(s)
      Y. Inoue and Y. T. Tanaka
    • Journal Title

      Astrophysical Journal

      Volume: 818 Pages: 187-192

    • DOI
      10.3847/0004-637x/818/2/187
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optical I-band Linear Polarimetry of the Magnetar 4U 0142+61 with Subaru2015

    • Author(s)
      Z. Wang, Y. T. Tanaka et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 814 Pages: 89-93

    • DOI
      10.1088/0004-637x/814/2/89
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Third Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope2015

    • Author(s)
      M. Ackermann, Y. T. Tanaka et al.
    • Journal Title

      The Astrophyisical Journal

      Volume: 810 Pages: 14-14

    • DOI
      10.1088/0004-637x/810/1/14
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Prospect for Future MeV Gamma-ray Active Galactic Nuclei Population Studies2015

    • Author(s)
      Y. Inoue, Y. T. Tanaka et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 67 Pages: 76-76

    • DOI
      10.1093/pasj/psv043
    • Related Report
      2015 Research-status Report
    • Peer Reviewed
  • [Journal Article] Time-dependent Modeling of Gamma-Ray Flares in Blazar PKS1510-0892015

    • Author(s)
      S. Saito, L. Stawarz, Y. T. Tanaka et al.
    • Journal Title

      Astrophysical Journal

      Volume: 809 Pages: 171-180

    • DOI
      10.1088/0004-637x/809/2/171
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] An emergence of a new polarized emission region in blazar Mrk 421 associated with an X-ray flare2015

    • Author(s)
      R. Itoh, Y. Fukazawa, Y. T. Tanaka et al.
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 67 Pages: 45-45

    • DOI
      10.1093/pasj/psv016
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Fermi Large Area Telescope Third Source Catalog2015

    • Author(s)
      F. Acero, Y. T. Tanaka et al.
    • Journal Title

      Astrophysical Journal Supplement Series

      Volume: 218 Pages: 23-63

    • DOI
      10.1088/0067-0049/218/2/23
    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ジェットを伴う潮汐破壊現象におけるガンマ線放射の探索と放射機構の解明2017

    • Author(s)
      田中康之、井上芳幸
    • Organizer
      日本天文学会春季大会
    • Place of Presentation
      九州大学
    • Year and Date
      2017-03-15
    • Related Report
      2016 Annual Research Report
  • [Presentation] IceCube neutrino の電磁波 ToO 観測の現状と今後2017

    • Author(s)
      田中康之
    • Organizer
      突発・変動天体の多波長連携観測
    • Place of Presentation
      茨城大学
    • Year and Date
      2017-03-06
    • Related Report
      2016 Annual Research Report
  • [Presentation] フェルミ衛星の現状とIceCubeニュートリノイベントの可視近赤外線フォローアップ観測2017

    • Author(s)
      田中康之
    • Organizer
      マルチメッセンジャー天文学研究会
    • Place of Presentation
      千葉大学
    • Year and Date
      2017-03-03
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] フェルミ衛星によるMeV/GeVガンマ線観測の成果とフェルミからの期待2017

    • Author(s)
      田中康之
    • Organizer
      第1回MeVガンマ線天文学研究会
    • Place of Presentation
      京都大学
    • Year and Date
      2017-02-28
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] IceCube 高エネルギーニュートリノ事象の可視近赤外線フォローアッ プ観測2017

    • Author(s)
      田中康之
    • Organizer
      木曽広視野サーベイと京都 3.8m 即時分光によるタイムドメイン天文学の推進
    • Place of Presentation
      京都大学
    • Year and Date
      2017-02-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] 大学間連携によるニュートリノイベントフォローアップ観測の提案2016

    • Author(s)
      田中康之
    • Organizer
      第 7 回光赤外線大学間連携ワークショップ
    • Place of Presentation
      京都大学
    • Year and Date
      2016-11-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] No Evidence of Intrinsic Optical/Near-Infrared Linear Polarization for V404 Cygni During its Bright Outburst in 2015: Broadband Modeling and Constraint on Jet Parameters2016

    • Author(s)
      Yasuyuki Tanaka
    • Organizer
      INTEGRAL 2016 Conference
    • Place of Presentation
      アムステルダム、オランダ
    • Year and Date
      2016-10-11
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] GeV - TeV ガンマ線データによる HBL 天体の平均 SED とTeV ガンマ線背景放射の赤方偏移分布2016

    • Author(s)
      田中康之、井上芳幸、深沢泰司
    • Organizer
      日本天文学会秋季大会
    • Place of Presentation
      愛媛大学
    • Year and Date
      2016-09-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] ブラックホール連星V404 Cygにおけるジェット放射への制限: 可視近赤外線偏光観測と広帯域スペクトルモデリング2016

    • Author(s)
      田中康之ほか
    • Organizer
      日本天文学会
    • Place of Presentation
      首都大学東京
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
  • [Presentation] ブラックホール連星 V404 Cyg の多波長観測: マイクロクエーサーにおけるジェットパラメータへの制限2015

    • Author(s)
      田中康之
    • Organizer
      高エネルギー宇宙物理学研究会2015
    • Place of Presentation
      静岡県沼津市
    • Year and Date
      2015-11-25
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] No Evidence of Intrinsic Optical Near-Infrared Linear Polarization and Fermi-LAT Observation for V404 Cyg during the Bright Outburst in 2015: Broadband Modeling and Constraint on Jet Parameters2015

    • Author(s)
      Y. T. Tanaka et al.
    • Organizer
      Sixth International Fermi Symposium
    • Place of Presentation
      Arlington, USA
    • Year and Date
      2015-11-09
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fermi-LAT and multi-wavelength observation of new TeV-emitting blazar S4 0954+65 during bright optical flare in 2015 Februrary2015

    • Author(s)
      田中康之ほか
    • Organizer
      日本天文学会
    • Place of Presentation
      甲南大学
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report
  • [Presentation] Blazar Studied in X-rays with Suzaku, MAXI, and Future Astro-H2015

    • Author(s)
      Y. T. Tanaka
    • Organizer
      Relativistic Jets: Creation, Dynamics, and Internal Physics
    • Place of Presentation
      Krakow, Poland
    • Year and Date
      2015-04-20
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] CTA Contributions to the 34th International Cosmic Ray Conference (ICRC2015)2015

    • Author(s)
      CTA Consortium, A. Abchiche, Y. T. Tanaka et al.
    • Total Pages
      100
    • Publisher
      Proceedings of Science
    • Related Report
      2015 Research-status Report

URL: 

Published: 2015-04-16   Modified: 2018-03-22  

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