Detection of a bright burst from the repeating fast radio burst 20201124A at 2 GHz

DOI PDF 参考文献36件
  • Sota Ikebe
    Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 , Japan
  • Kazuhiro Takefuji
    Usuda Deep Space Center, Japan Aerospace Exploration Agency , 1831-6 Oomagari, Kamiodagiri, Saku, Nagano 384-0306 , Japan
  • Toshio Terasawa
    Institute for Cosmic Ray Research, The University of Tokyo , 5-1-5 Kashiwa-no-ha, Kashiwa, Chiba 277-8582 , Japan
  • Sujin Eie
    Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 , Japan
  • Takuya Akahori
    Mizusawa VLBI Observatory, National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-0015 , Japan
  • Yasuhiro Murata
    Usuda Deep Space Center, Japan Aerospace Exploration Agency , 1831-6 Oomagari, Kamiodagiri, Saku, Nagano 384-0306 , Japan
  • Tetsuya Hashimoto
    Department of Physics, National Chung Hsing University , No. 145, Xingda Rd., South Dist., Taichung 40277, Taiwan ( R.O.C. )
  • Shota Kisaka
    Department of Physics, Hiroshima University , 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 , Japan
  • Mareki Honma
    Department of Astronomy, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 , Japan
  • Shintaro Yoshiura
    Mizusawa VLBI Observatory, National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-0015 , Japan
  • Syunsaku Suzuki
    Mizusawa VLBI Observatory, National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-0015 , Japan
  • Tomoaki Oyama
    Mizusawa VLBI Observatory, National Astronomical Observatory of Japan , 1-2-2 Mizusawa-Hoshigaoka, Oshu, Iwate 023-0861 , Japan
  • Mamoru Sekido
    National Institute of Information and Communications Technology , 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795 , Japan
  • Kotaro Niinuma
    Graduate School of Sciences and Technology for Innovation, Yamaguchi University , 1677-1 Yoshida, Yamaguchi 753-8512 , Japan
  • Hiroshi Takeuchi
    Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science , 3-1-1 Yoshinodai, Sagamihara, Kanagawa 252-5210 , Japan
  • Yoshinori Yonekura
    Center for Astronomy, Ibaraki University , 2-1-1, Bunkyo, Mito, Ibaraki 310-8512 , Japan
  • Teruaki Enoto
    Cluster for Pioneering Research, RIKEN , 2-1 Hirosawa, Wako, Saitama 351-0198 , Japan

抄録

<jats:title>Abstract</jats:title> <jats:p>We present a detection of a bright burst from the fast radio burst (FRB) 20201124A, which is one of the most active repeating FRBs, based on S-band observations with the 64 m radio telescope at the Usuda Deep Space Center/JAXA. This is the first FRB observed by using a Japanese facility. Our detection at 2 GHz in 2022 February is the highest frequency for this FRB and the fluence of &gt;189 Jy ms is one of the brightest bursts from this FRB source. We place an upper limit on the spectral index α = −2.14 from the detection of the S band and non-detection of the X band at the same time. We compare the event rate of the detected burst with those from previous research and suggest that the power law of the luminosity function might be broken at lower fluence and the fluences of bright FRBs are distributed up to over 2 GHz with the power law against frequency. In addition, we show that the energy density of the burst detected in this work is comparable to the bright population of one-off FRBs. We propose that repeating FRBs can be as bright as one-off FRBs and only their brightest bursts might be detected, so some repeating FRBs intrinsically might have been classified as one-off FRBs.</jats:p>

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