/ 98 01 22 0 v 1 2 3 Ja n 19 98 Disk and Corona Instabilities in GRS 1915 + 105
نویسندگان
چکیده
We present time-resolved GRS 1915+105 energy and power spectra observed by RXTE, during an episode where the X-ray intensity makes an extreme dip. If the spectra are modeled in terms of disk and power law components, both have large variations. When the inner disk is disrupted, the power law dominates, exhibiting quasi-periodic oscillations with varying frequency until the inner disk returns.
منابع مشابه
X iv : a st ro - p h / 97 12 17 0 v 1 1 2 D ec 1 99 7 Thermal - viscous instabilities in the accretion disk of GRS 1915 + 105
We use data obtained with the PCA onboard RXTE to analyze the spectral variations of the black hole candidate and superluminal source GRS 1915+105. Our results suggest that despite the complicated structure of the X-ray light curve, all spectral changes observed in this source can be explained as a sudden disappearing of the inner part of the accretion disk around the compact object, followed b...
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متن کاملar X iv : a st ro - p h / 96 12 12 8 v 1 1 3 D ec 1 99 6 The Pattern of Correlated X - ray Timing and Spectral Behavior in GRS 1915 + 105
From data obtained from the PCA in the 2-11 keV and 11-30.5 keV energy range, GRS 1915+105 is seen during RXTE observations between 1996 May and October on two separate branches in a hardness intensity diagram. On the hard branch, GRS 1915+105 exhibits narrow quasi-periodic oscillations ranging from 0.5 to 6 Hz with ∆ν ν ∼ 0.2. The QPOs are observed over intensities ranging from about 6,000 to ...
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