HEAD Division Meeting 1999, April 1999
Session 28. Black Holes
Poster, Wednesday, April 14, 1999, 8:30am Wed. - 2:00pm Thurs., Gold Room

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[28.07] Origin of the Soft Spectral Component of Black Hole Candidates

D. Lin, I. A. Smith, E. P. Liang, M. B\"ottcher (Rice University)

In our recent multiwavelength observations of GRS 1758-258, a soft component was found in the spectrum. The soft component can be represented by a black body spectrum with a temperature of 0.81 keV. Only 1.5% of the total energy flux in the energy range of 2.5 - 10000 keV is from the soft component. Similar soft components were also found in the low state Cyg X-1 spectra. We explore the origin of the soft component in this paper. Basing on the Compton scattering model, we examine various possible origins of the soft component with our well developed Monte Carlo simulation code. We also discuss how the origin of the soft component constrains the X-ray emitting mechanisms of BHCs.


If the author provided an email address or URL for general inquiries, it is as follows:
http://spacsun.rice.edu/~lin/publication.html

lin@spacsun.rice.edu


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