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Collision of cosmological shock waves produced by explosions and formation of large-scale structures
https://ir.soken.ac.jp/records/3512
https://ir.soken.ac.jp/records/351215c70134-76d9-4807-90e8-171d5495d125
| 名前 / ファイル | ライセンス | アクション |
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nph-iarticle_query360 (621.1 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-04-25 | |||||
| タイトル | ||||||
| タイトル | Collision of cosmological shock waves produced by explosions and formation of large-scale structures | |||||
| タイトル | ||||||
| タイトル | Collision of cosmological shock waves produced by explosions and formation of large-scale structures | |||||
| 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 | |||||
| 著者 |
YOSHIOKA, Satoshi
× YOSHIOKA, Satoshi× IKEUCHI, Satoru |
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| 著者別名 |
池内 , 了
× 池内 , 了 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We investigate the collision process of two cosmological shock waves produced by explosions by two-dimensional numerical hydrodynamical calculations in relation to the formation of large-scale structures. The numerical hydrodynamical code is designed to include self-gravity and cooling processes as well as the cosmic expansion. The structures resulting from the collisions can be classified into four categories by their global appearances: complete merging case, merging case with a dense ring at the intersection of the two shock waves, nonmerging case with a ring, and nonmerging case separated by a dense wall. From calculations with various parameters, we obtain the parameter dependence of the structures formed. The parameters searched, which affect the resultant structures, are the explosion redshift, the comoving distance between the two explosions, and the explosion energy for the case that two explosions are identical. In addition, we also calculate the cases that the explosion redshifts are different. From these, we explore the conditions for merging and ring formation, obtain their semianalytical expressions, and discuss the mechanism of ring formation: a ring is not produced by self-gravity, but it results from the cancellation of momenta in the direction perpendicular to the interaction plane at the collision. In addition, gravitational instability and fragmentation of expanding rings are examined. These results are discussed in relation to the formation of large-scale structures in the universe. | |||||
| 書誌情報 |
Astrophysical Journal, Part 1 en : Astrophysical Journal, Part 1 巻 360, 号 2, p. 352-369, 発行日 1990-09 |
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| 出版者 | ||||||
| 出版者 | The American Astronomical Society | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0004-637X | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | http://doi.org/10.1086/169127 | |||||
| 関連名称 | 10.1086/169127 | |||||
| 権利 | ||||||
| 権利情報 | © 1990. The American Astronomical Society | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://aas.org/publications/aas-copyright-policy | |||||
| 関連名称 | Copyright | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
