Paul, B. ; Rao, A. R. (2001) Spectral evolution of GRS 1915+105 during the regular flares AIP Conference Proceedings: X-RAY ASTRONOMY: Stellar Endpoints,AGN, and the Diffuse X-ray Background, 599 . pp. 846-849. ISSN 0094-243X
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Official URL: http://proceedings.aip.org/resource/2/apcpcs/599/1...
Related URL: http://dx.doi.org/10.1063/1.1434757
Abstract
We have investigated spectral evolution of GRS 1915+105 during the regular flares by high time resolution spectroscopy. Twenty-four color light-curves were converted into 1 s and 3 s spectra. A spectral model consisting of a disk black-body and a power-law, shows that the flux variations during the regular flares (in 2–20 keV range) can mainly be attributed to changes in the disk black-body emission, with a small increase in the power-law flux. The disk black-body temperature increases gradually with the flux, and is associated with a decrease in the size of the emission region. Two different types of intensity variations, that is spectral-state transitions and regular flares involving a disappearing disk are found to occur simultaneously.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Black Holes; Galaxy; Accretion Disks; Accretion; Astronomical Spectra; X-Ray Binary Stars; Spectral Analysis |
| ID Code: | 95608 |
| Deposited On: | 08 Feb 2013 09:01 |
| Last Modified: | 08 Feb 2013 09:03 |
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