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arXiv:astro-ph/0011116 (astro-ph)
[Submitted on 6 Nov 2000]

Title:Disk-corona interactions in soft spectral states of black hole binaries

Authors:Piotr T. Zycki, (CAMK, Warsaw)
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Abstract: Re-analysis of some archival X-ray data of black hole binaries in soft spectral states is presented. Results of detailed spectral fitting, including proper physical description of the X-ray reprocessed component, indicate that in most cases the soft, thermal disk emission cannot be described by a simple multi-color blackbody model. Additional Comptonization of those seed photons provides an acceptable description of the soft component, implying a presence of a warm (kT~1 keV), mildly optically thick (tau~10) phase of accreting plasma.
Combined spectral/temporal analysis of GS 1124-68 during 'flip-flop' transitions in Very High State suggests that the optically thick accretion flow can proceed in (at least) two modes giving the same time-integrated behaviour (i.e. energy spectra) but very different timing behaviour.
Comments: 4 pages, 4 figures. To be published in `Proceedings of the Third Microquasar Workshop: Granada Workshop on Galactic relativistic jet sources', Eds: A. J. Castro-Tirado, J. Greiner and J. M. Paredes, Astrophysics and Space Science, in press
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0011116
  (or arXiv:astro-ph/0011116v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0011116
Journal reference: 2001, ApSSS, 276, 169

Submission history

From: Piotr Zycki [view email]
[v1] Mon, 6 Nov 2000 12:32:02 UTC (27 KB)
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