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  1. 010 学術雑誌論文
  2. 池内, 了 / IKEUCHI, Satoru

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/3512
15c70134-76d9-4807-90e8-171d5495d125
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nph-iarticle_query360.pdf 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

YOSHIOKA, Satoshi

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IKEUCHI, Satoru

× IKEUCHI, Satoru

IKEUCHI, Satoru

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著者別名 池内 , 了

× 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
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
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