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Evolution of the intergalactic medium and UV background radiation
https://ir.soken.ac.jp/records/3299
https://ir.soken.ac.jp/records/329933106153-fcbc-4e72-a912-c2084c6aac73
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
nph-iarticle_query (229.2 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||
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| 公開日 | 2012-12-13 | |||||||||
| タイトル | ||||||||||
| タイトル | Evolution of the intergalactic medium and UV background radiation | |||||||||
| タイトル | ||||||||||
| タイトル | Evolution of the intergalactic medium and UV background radiation | |||||||||
| 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 |
OKOSHI, Katsuya
× OKOSHI, Katsuya
× 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 discuss the evolutions of the intensity and spectrum of the UV background radiation (UVB) in flat and open cold dark-matter universes. We consider two kinds of UV sources: one is QSOs, the other is collapsing objects, which liberate their binding energy radiatively. In the latter sources, we include the line emission corresponding to collisional excitation cooling of HeII as well as free-free emission. We find that UV photons emitted from collapsing objects contribute to UVB as much as those from QSOs, and that the UVB spectrum becomes softer than that in the case in which only QSOs are taken into account. We also calculate the Gunn-Peterson optical depths assuming the ionization equilibrium, and compare them with observations. | |||||||||
| 書誌情報 |
Publications of the Astronomical Society of Japan en : Publications of the Astronomical Society of Japan 巻 48, 号 3, p. 441-465, 発行日 1996-08 |
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| 出版者 | ||||||||||
| 出版者 | The Astronomical Society of Japan | |||||||||
| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 00046264 | |||||||||
| DOI | ||||||||||
| 関連タイプ | isIdenticalTo | |||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | http://doi.org/10.1093/pasj/48.4.557 | |||||||||
| 関連名称 | 10.1093/pasj/48.4.557 | |||||||||
| 権利 | ||||||||||
| 権利情報 | © The Astronomical Society of Japan | |||||||||
| 関連サイト | ||||||||||
| 識別子タイプ | URI | |||||||||
| 関連識別子 | http://pasj.asj.or.jp/info/subscription.html | |||||||||
| 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 | |||||||||
