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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

1/f fluctuations in spinning-particle motions around a Schwarzschild black hole

http://hdl.handle.net/2237/11272
http://hdl.handle.net/2237/11272
74a51374-8a42-4750-aad5-ea3b0cf7feee
名前 / ファイル ライセンス アクション
Konishi_PhysRevD_76_064031.pdf Konishi_PhysRevD_76_064031.pdf (3.5 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2009-03-09
タイトル
タイトル 1/f fluctuations in spinning-particle motions around a Schwarzschild black hole
言語 en
著者 Koyama, Hiroko

× Koyama, Hiroko

WEKO 27023

en Koyama, Hiroko

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Kiuchi, Kenta

× Kiuchi, Kenta

WEKO 27024

en Kiuchi, Kenta

Search repository
Konishi, Tetsuro

× Konishi, Tetsuro

WEKO 27025

en Konishi, Tetsuro

Search repository
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 American Physical Society, All rights reserved.
キーワード
主題Scheme Other
主題 black holes
キーワード
主題Scheme Other
主題 chaos
キーワード
主題Scheme Other
主題 Schwarzschild metric
キーワード
主題Scheme Other
主題 time series
キーワード
主題Scheme Other
主題 topology
抄録
内容記述 We study the properties of chaos in the motions of a spinning test particle in Schwarzschild spacetime. We characterize the chaos using the power spectrum of the time series of z components of the particle's position. It is found that the pattern of the power spectrum shows not only white noise but also 1/f-type fluctuation, depending on the value of the total angular momentum J and the spin S of the test particle. Therefore we succeed in classifying the chaotic motions, which have been classified as simply chaotic ones in former works, into the two distinct types. One is 1/f, and the other is white noise. Based on this classification, we plot, in the two-dimensional parameter space (J,S), the phase diagram for the properties of the chaos. This phase diagram enables us in principle to guess the properties of the system (J,S) by observing the dynamics of the test particle, even if the motion is chaotic. Furthermore, we detect that the origin of the 1/f fluctuation is that the particle motion stagnates around regular orbits (tori), while traveling back and forth between them, which is called ''stagnant motion'' or ''sticky motion'' in Hamiltonian dynamical systems. The point is that the difference of the property of the chaos or the power spectra is due to the topological structure of the phase space, which in turn is governed by the physical parameter set (J,S) of the system. From this point of view, the chaos we found in this system is not always merely random.
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
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1103/PhysRevD.76.064031
ISSN
収録物識別子タイプ PISSN
収録物識別子 1550-7998
書誌情報 en : PHYSICAL REVIEW D

巻 76, 号 6, p. 064031-064031, 発行日 2007-09
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/11272
識別子タイプ HDL
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