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1/f fluctuations in spinning-particle motions around a Schwarzschild black hole
http://hdl.handle.net/2237/11272
http://hdl.handle.net/2237/1127274a51374-8a42-4750-aad5-ea3b0cf7feee
名前 / ファイル | ライセンス | アクション |
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Konishi_PhysRevD_76_064031.pdf (3.5 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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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× Kiuchi, Kenta× Konishi, Tetsuro |
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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 | 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 | ||||||
内容記述タイプ | Abstract | |||||
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 | |||||
出版者 | ||||||
出版者 | American Physical Society | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | 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 |
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フォーマット | ||||||
値 | 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 |