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2020 Fiscal Year Annual Research Report

エディントン光度を超える降着型コンパクト天体の系統的研究

Research Project

Project/Area Number 18F18318
Research InstitutionKyoto University

Principal Investigator

上田 佳宏  京都大学, 理学研究科, 准教授 (10290876)

Co-Investigator(Kenkyū-buntansha) HU CHIN-PING  京都大学, 理学(系)研究科(研究院), 外国人特別研究員
Project Period (FY) 2018-11-09 – 2021-03-31
Keywords中性子星 / 超臨界降着
Outline of Annual Research Achievements

During the last fiscal year, Dr. Hu participated in the NICER Magnetar and Magnetosphere group and contributed to several works, including the discovery of a new radio-emitting magnetar, Swift J1818.0-1627, which hints at an important link between magnetars and high-magnetic-field rotation-powered pulsar. Follow-up observations using radio telescopes are ongoing. As for the accreting compact objects, Drs. Hu and Ueda have discovered periodic dips in a pulsating ULX, M51 ULX-7. This unique property among pulsating ULXs implies a high inclination angle that disfavors the strong-beaming scenario. The result provides an important hint for magnetospheric accretion and suggests a high magnetic field of ULX-7. Moreover, a few interesting sources are discovered by the semi-automatic timing algorithm developed during Dr. Hu's JSPS tenure. They will be deeply investigated in the future.

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

  • Research Products

    (4 results)

All 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results)

  • [Journal Article] Possible Periodic Dips in the Pulsating Ultraluminous X-Ray Source M51 ULX-72021

    • Author(s)
      Hu, C.-P., Ueda, Y., and Enoto, T.
    • Journal Title

      The Astrophysical Journal

      Volume: 909 Pages: -

    • DOI

      10.3847/1538-4357/abd7a5

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Multiwavelength Study of the γ-Ray Binary Candidate HESS J1832-0932020

    • Author(s)
      Tam, P.-H. T., (Hu, C.-P.) et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 899 Pages: -

    • DOI

      10.3847/1538-4357/ab9e76

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Multiwavelength Study of PSR J1119-6127 after 2016 Outburst2020

    • Author(s)
      Wang, H.-H., (Hu, C.-P.) et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 902 Pages: -

    • DOI

      10.3847/1538-4357/abb3c4

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] NICER Observation of the Temporal and Spectral Evolution of Swift J1818.0-1607: A Missing Link between Magnetars and Rotation-powered Pulsars2020

    • Author(s)
      Hu, C.-P., et al.
    • Journal Title

      The Astrophysical Journal

      Volume: 902 Pages: -

    • DOI

      10.3847/1538-4357/abb3c9

    • Peer Reviewed / Int'l Joint Research

URL: 

Published: 2021-12-27  

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