| タイトル | The 1979 X-ray outburst of Cen X-4 |
| 本文（外部サイト） | http://hdl.handle.net/2060/19800017736 |
| 著者（英） | Swank, J. H.; Kaluzienski, L. J.; Holt, S. S. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1980-05-01 |
| 言語 | eng |
| 内容記述 | X-ray observations of the first major outburst (since its initial discovery in 1969) of the "classical" transient X-ray source Cen X-4 were obtained with the Ariel 5 All-Sky Monitor. The flare light curve exhibits a double-peaked maximum at a level of approximately 4 times the Crab nebula, and its duration and characteristic decay time scale are the shortest yet observed from the class of "soft" X-ray transients. A total X-ray output of approximately 3 x 10 to the 43rd power ergs, a factor of approximately 20 less than that of the 1969 outburst is estimated. In addition, evidence is found for a regular modulation of the flux during the decline phase at a period of 8.2 plus or minus 0.2 hours. The existing data are consistent with a source model involving episodic mass exchange from a late-type dwarf onto a neutron star comparison in a relatively close binary system. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 80N26235
NASA-TM-80694 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/172238 |
