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Evolution of Lyman α clouds at low redshifts
https://ir.soken.ac.jp/records/3296
https://ir.soken.ac.jp/records/3296b3b8179b-56b7-451b-bb60-ec62ba67ce16
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
nph-iarticle_query (99.9 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2012-12-13 | |||||
| タイトル | ||||||
| タイトル | Evolution of Lyman α clouds at low redshifts | |||||
| タイトル | ||||||
| タイトル | Evolution of Lyman α clouds at low redshifts | |||||
| 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 examine the evolution of an intergalactic gas cloud confined by the gravity of cold dark matter in the minihalo model. Assuming that the evolution of the diffuse ultraviolet (UV) flux follows a power law function of the form (1 + z)alphai with a change in exponent at redshift zc and a constant comoving number density of gas clouds, we can reproduce the evolution of the number of clouds per unit redshift at both high and low redshifts with alphaL = 2 for z less than or equal to zc and alphah = -4 (or -3) for z greater than zc with zc = 1.9 (or 1.8). Such a small value of alphaL implies much more UV flux at low redshifts than is expected from the luminosity function of observed quasars. Moreover, we find that the required intensity of this UV flux is consistent with observations of the Gunn-Peterson effect and of the continuum depression. | |||||
| 書誌情報 |
Astrophysical Journal, Part 2 - Letters en : Astrophysical Journal, Part 2 - Letters 巻 421, 号 2, p. L79-L82, 発行日 1994-02 |
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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/10.1086/187192 | |||||
| 関連名称 | 10.1086/187192 | |||||
| 権利 | ||||||
| 権利情報 | © 1994. 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 | |||||
