| タイトル | O VIII resonant absorption in PKS 2155 - 304 - A hot wind |
| 著者（英） | Kallman, T. R.; Fabian, A. C.; Krolik, J. H.; Rees, M. J. |
| 著者所属（英） | NASA Goddard Space Flight Center|Harvard-Smithsonian Center for Astrophysics|Johns Hopkins Univ.|Cambridge Univ.|Maryland Univ. |
| 発行日 | 1985-08-01 |
| 言語 | eng |
| 内容記述 | The broad X-ray absorption feature in PKS 2155 - 304 could be due to O VIII Ly-alpha resonant absorption in a wind with outflow speeds up to about 30,000 km/s. The properties of such a wind are calculated. A homogeneous, spherically symmetric wind would involve a mass flux of about a 1000 solar masses/year, but this estimate could be greatly reduced if the outflow were beamed, and/or the absorbing gas were clumped into small clouds. In the latter case, the O VIII absorption offers clues to the physical state of thermal material closer to the central energy source than the clouds which produce optical emission lines in quasars. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 85A44339 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/390122 |
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