A search for auroral radio emission from β Pictoris b

DOI DOI PDF PDF 参考文献117件 オープンアクセス
  • Yuta Shiohira
    Graduate School of Science and Technology, Kumamoto University , Kumamoto 860-8555 , Japan
  • Yuka Fujii
    Devision of Science, National Astronomical Observatory of Japan , Tokyo 113-0033 , Japan
  • Hajime Kita
    Department of Information and Communication Engineering, Tohoku Institute of Technology , Sendai 982-8577 , Japan
  • Tomoki Kimura
    Department of Physics, Faculty of Science, Tokyo University of Science , Tokyo 162-8601 , Japan
  • Yuka Terada
    Institute of Astronomy and Astrophysics , Academia Sinica, Taipei 10617 , Taiwan, R.O.C.
  • Keitaro Takahashi
    Graduate School of Science and Technology, Kumamoto University , Kumamoto 860-8555 , Japan

書誌事項

公開日
2023-12-27
資源種別
journal article
権利情報
  • https://creativecommons.org/licenses/by/4.0/
DOI
  • 10.1093/mnras/stad3990
  • 10.48550/arxiv.2312.15176
公開者
Oxford University Press (OUP)

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説明

<jats:title>ABSTRACT</jats:title> <jats:p>Magnetized exoplanets can serve as the source of auroral radio emissions, allowing us to characterize the magnetospheric properties of these planets. Successful detections of auroral radio emissions from brown dwarfs, as well as from Jupiter, suggest that Jupiter-like planets in distant orbits may also generate radio emissions through a similar mechanism. In this study, we present our search for 250–500 MHz emissions from β Pictoris b, one of the most extensively studied young Jupiter-like planets. We conducted the search using the upgraded Giant Meterwave Radio Telescope. Despite the favourable orbital inclination, no signal was detected, putting 3σ upper limits on the radiation at 0.18 mJy. We translate this limit into constraints on the ionospheric and magnetospheric parameters, assuming that the emission is powered by the Hill current system. While the upper limit is larger by a factor of a few than the nominal estimate of radio intensity, we put constraints on the magnetospheric and ionospheric parameters.</jats:p>

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