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Probing the origin of the near infrared background excess using gamma-ray emitting objects

Research Project

Project/Area Number 16K13813
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionInstitute of Physical and Chemical Research (2017-2018)
Japan Aerospace EXploration Agency (2016)

Principal Investigator

Inoue Yoshiyuki  国立研究開発法人理化学研究所, 数理創造プログラム, 上級研究員 (70733989)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords高エネルギー天文学 / 活動銀河核 / 宇宙背景放射 / 宇宙物理 / 天文 / 理論天文学 / 光学赤外線天文学
Outline of Final Research Achievements

The goal of this research is to probe the origin of the cosmic near-infrared background excess using extragalactic gamma-ray objects. For this aim, we have 1) constructed a spectral model for blazar radiation spectra, 2) estimated the gamma-ray attenuation level including the excess assuming various redshift evolution, 3) tried determining the redshift distribution of the excess using the gamma-ray data of blazars. Due to the quality of the data, we could not determine the redshift distribution of the excess itself. For the next step, we are going to constrain the redshift distribution using the current data sets.

Academic Significance and Societal Importance of the Research Achievements

ガンマ線という新たな手法を用いることで、近赤外線背景放射超過成分 の存在可能な距離を制限できる可能性を示した。つまり、宇宙物理学における観測においてもっとも 基本的な情報である「距離」であるが、本研究は超過成分の距離の情報を得る研究の端緒となった。今後、距離が制限できれば、そのエネルギーなどを議論することが初めて可能となり、起源の特定に向けて大きく前進出来ることが期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (14 results)

All 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (10 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 9 results,  Open Access: 3 results,  Acknowledgement Compliant: 2 results) Presentation (1 results) Book (1 results)

  • [Int'l Joint Research] オックスフォード大学(英国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] ストックホルム大学(スウェーデン)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Detection of Coronal Magnetic Activity in nearby Active Supermassive Black Holes2018

    • Author(s)
      Inoue Yoshiyuki、Doi Akihiro
    • Journal Title

      The Astrophysical Journal

      Volume: 869 Issue: 2 Pages: 114-114

    • DOI

      10.3847/1538-4357/aaeb95

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Diffuse X-Ray Emission from the Northern Arc of Loop I Observed with Suzaku2018

    • Author(s)
      Akita Masahiro、Kataoka Jun、Arimoto Makoto、Sofue Yoshiaki、Totani Tomonori、Inoue Yoshiyuki、Nakashima Shinya
    • Journal Title

      The Astrophysical Journal

      Volume: 862 Issue: 1 Pages: 88-88

    • DOI

      10.3847/1538-4357/aacd08

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Spatial Distribution of the Milky Way Hot Gaseous Halo Constrained by Suzaku X-Ray Observations2018

    • Author(s)
      Nakashima Shinya、Inoue Yoshiyuki、Yamasaki Noriko、Sofue Yoshiaki、Kataoka Jun、Sakai Kazuhiro
    • Journal Title

      The Astrophysical Journal

      Volume: 862 Issue: 1 Pages: 34-34

    • DOI

      10.3847/1538-4357/aacceb

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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

      ELSEVIER

      Volume: 90 Pages: 14-19

    • DOI

      10.1016/j.astropartphys.2017.01.012

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [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

      ApJ

      Volume: 840 Issue: 1 Pages: 46-46

    • DOI

      10.3847/1538-4357/aa6b57

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Cherenkov telescope array extragalactic survey discovery potential and the impact of axion-like particles and secondary gamma rays2017

    • Author(s)
      De Franco Andrea、Inoue Yoshiyuki、S?nchez-Conde Miguel A.、Cotter Garret
    • Journal Title

      Astroparticle Physics

      Volume: 93 Pages: 8-16

    • DOI

      10.1016/j.astropartphys.2017.03.010

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Evidence for Higher Black Hole Spin in Radio-loud Quasars2017

    • Author(s)
      Schulze Andreas、Done Chris、Lu Youjun、Zhang Fupeng、Inoue Yoshiyuki
    • Journal Title

      The Astrophysical Journal

      Volume: 849 Issue: 1 Pages: 4-4

    • DOI

      10.3847/1538-4357/aa9181

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / 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

      ApJ

      Volume: 828 Issue: 1 Pages: 13-13

    • DOI

      10.3847/0004-637x/828/1/13

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [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

      Monthly Notices of the Royal Astronomical Society

      Volume: 461 Issue: 4 Pages: 4329-4334

    • DOI

      10.1093/mnras/stw1637

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A significant hardening and rising shape detected in the MeV/GeV νFν 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, J. Becerra Gonzalez, R. Itoh, J. D. Finke, Y. Inoue, R. Ojha, B. Carpenter, E. Lindfors, F. Krauss, R. Desiante, K. Shiki, Y. Fukazawa, F. Longo, J. McEnery, S. Buson, K. Nilsson, V. Fallah Ramazani, R. Reinthal, L. Takalo, T. Pursimo, W. Boschin
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 68 Issue: 4 Pages: 51-51

    • DOI

      10.1093/pasj/psw049

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Mass Loading Efficiency and Particle Acceleration Efficiency of Relativistic Jets: Cases For Low Luminosity BL Lacs2016

    • Author(s)
      井上芳幸
    • Organizer
      日本天文学会
    • Place of Presentation
      愛媛大学
    • Related Report
      2016 Research-status Report
  • [Book] Science with the Cherenkov Telescope Array2018

    • Author(s)
      CTA Consortium
    • Total Pages
      213
    • Publisher
      World Scientific Publishing Co. Pte. Ltd.
    • Related Report
      2018 Annual Research Report

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Published: 2016-04-21   Modified: 2022-02-22  

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