The evolution of the optically thick accretion disk in nova muscae

Ranjeev Misra, Fulvio Melia

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We here model the soft X-ray flux from the black hole X-ray nova, GS 1124-68 (Nova Muscae, GRS 1124-68) as emission from an optically thick accretion disk with Comptonization. Our results suggest that the disk's inner edge has a radius the dependence of which on the accretion rate is a power law, and that the slope of this function changes between the different spectral states. This disk configuration retains a hot inner region, which can account for the hard X-rays, although its structure appears to be different during the soft and ultra-soft states.

Original languageEnglish (US)
Pages (from-to)848-854
Number of pages7
JournalAstrophysical Journal
Volume484
Issue number2
DOIs
StatePublished - Jan 1 1997

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Keywords

  • Accretion, accretion disks
  • Black hole physics
  • Novae, cataclysmic variables radiation mechanisms: Thermal
  • X-rays: Stars

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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