| タイトル | High Resolution Temporal and Spectral Monitoring of Eta Carinae's X-Ray Emission the June Eclipse |
| 著者（英） | Swank, J. H.; Davidson, K.; Henley, D.; Gull, T. R.; Corcoran, M. F.; Ishibashi, K.; Petre, R.; Pittard, J. M.; Hamaguchi, K. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2004-01-01 |
| 言語 | eng |
| 内容記述 | The supermassive and luminous star Eta Carinae undergoes strong X-ray variations every 5.5 years when its 2-10 keV X-ray emission brightens rapidly with wild fluctuations before dropping by a factor of 100 to a minimum lasting 3 months. The most recent X-ray "eclipse" began in June 2003 and during this time Eta Carinae was intensely observed throughout the electromagnetic spectrum. Here we report the first results of frequent monitoring of the 2-10 keV band X-ray emission by the Rossi X-ray Timing Explorer along wit high resolution X-ray spectra obtained with the transmission gratings on the Chandra X-ray Observatory. We compare these observations to those results obtained during the previous X-ray eclipse in 1998, and interpret the variations in the X-ray brightness, in the amount of absorption, in the X-ray emission measure and in the K-shell emission lines in terms of a colliding wind binary model. |
| NASA分類 | Astronomy |
| 権利 | Copyright |
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