Wide-band X-ray spectroscopy of GRS 1915+105

Details Wide-band X-ray spectroscopy of GRS 1915+105 Wide-band X-ray spectroscopy of GRS 1915+105

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.459..403c&link_type=abstract

In: Exploring the gamma-ray universe. Proceedings of the Fourth INTEGRAL Workshop, 4-8 September 2000, Alicante, Spain. Editor:

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X-Ray Sources, Accretion Disks, Microquasar

Scientific paper

We present the timing and spectral analysis of a recent observation of the superluminal galactic source GRS 1915+105 performed in April 1999 with the Narrow Field Instruments on board BeppoSAX. On that occasion the source light curve was characterised by a long series of quasi regular pulses with a mean recurrence time of about 50 s. Spectral analysis was performed in each of the five consecutive time intervals in which we segmented the folded light curves. A model including a multitemperature blackbody disk and a power law was adopted to estimate the parameters of the emission model, in particular the innermost disk radius and temperature. A time history of these quantities during the pulse was then obtained. We compare it with the results of other observations.

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