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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Dynamical photon sphere and time evolving shadow around black holes with temporal accretion

http://hdl.handle.net/2237/0002003951
http://hdl.handle.net/2237/0002003951
9945a5c7-8a24-48ee-ae68-feae02c24a57
名前 / ファイル ライセンス アクション
PhysRevD_105_104040.pdf PhysRevD_105_104040.pdf (2.6 MB)
Item type itemtype_ver1(1)
公開日 2022-10-31
タイトル
タイトル Dynamical photon sphere and time evolving shadow around black holes with temporal accretion
言語 en
著者 Koga, Yasutaka

× Koga, Yasutaka

en Koga, Yasutaka

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Asaka, Nobuyuki

× Asaka, Nobuyuki

en Asaka, Nobuyuki

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Kimura, Masashi

× Kimura, Masashi

en Kimura, Masashi

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Okabayashi, Kazumasa

× Okabayashi, Kazumasa

en Okabayashi, Kazumasa

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 © 2022 American Physical Society
内容記述
内容記述 A photon sphere is known as the geometrical structure that shapes a black hole shadow. The mechanism is well understood for static or stationary black hole spacetimes such as the Schwarzschild and the Kerr spacetimes. In this paper, we investigate and explicitly specify a photon sphere that shapes a black hole shadow in a dynamical spacetime while taking the global structure of the spacetime into account. We consider dynamical and eternal black hole cases of the Vaidya spacetime, which represents a spherically symmetric black hole with accreting null dust. First, we numerically show that there are the dynamical photon sphere and photon orbits corresponding to the shadow edge in a moderate accretion case. Second, the photon spheres are derived analytically in special cases. Finally, we discuss the relation between our photon sphere and the several notions defined as a photon sphere generalization.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 American Physical Society
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1103/PhysRevD.105.104040
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 2470-0010
書誌情報 en : Physical Review D

巻 105, 号 10, 発行日 2022-05-15
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