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Formation of stable non-gaussian velocity distribution on gravitational collapse and in merging process
http://hdl.handle.net/10083/2380
http://hdl.handle.net/10083/238097683308-bb62-4557-9a5a-59e0be138011
名前 / ファイル | ライセンス | アクション |
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KJ00004830758.pdf (954.3 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2008-04-30 | |||||
タイトル | ||||||
タイトル | Formation of stable non-gaussian velocity distribution on gravitational collapse and in merging process | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
著者 |
Naoko, Kanaeda
× Naoko, Kanaeda× Morikawa, Masahiro |
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著者(ヨミ) | ||||||
識別子 | 70836 | |||||
識別子Scheme | WEKO | |||||
姓名 | ナオコ, カナエダ | |||||
著者(ヨミ) | ||||||
識別子 | 70837 | |||||
識別子Scheme | WEKO | |||||
姓名 | モリカワ, マサヒロ | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The results of collisionless n-body simulations are presented. We discuss the formation of the velocity distribution in collisionless n-body 3-dimensional system using GRAPE5. We caluculate two models, a spherical collapse and a cluster collision, and observe stable non-gaussian velocity distributions which are well fitted by equall-weight superposition of thermal distributions with various temperatures (DT). As for the spherical model, the velocity distributions are DT distyributions in all cases provided that the initial virial ratio is less than 0.23. As for the cluster collision model, the velocity distributions are in-isotropic and depnends on axis. These non-gaussian velocity distributions are formed well before the thermallization of the systems and stably persist for all the time within our numerical calculations. The appearance of non-Gaussian velocity distributions strongly depends on the initial virial ratio but have no connection with other parameters such as softening parameter, initial configrations or velocity distributions. | |||||
書誌情報 |
お茶の水女子大學自然科學報告 巻 54, 号 1, p. 19-30, 発行日 2003-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00298190 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00033958 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
形態 | ||||||
954267 bytes | ||||||
日本十進分類法 | ||||||
主題Scheme | NDC | |||||
主題 | 400 | |||||
出版者 | ||||||
出版者 | お茶の水女子大学 | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | 紀要論文 | |||||
資源タイプ・ローカル | ||||||
紀要論文 | ||||||
資源タイプ・NII | ||||||
Departmental Bulletin Paper | ||||||
資源タイプ・DCMI | ||||||
text | ||||||
資源タイプ・ローカル表示コード | ||||||
03 | ||||||
所属 | ||||||
Department of Physics, Ochanomizu University | ||||||
所属 | ||||||
Department of Physics, Ochanomizu University |