Stable Inner Accretion Disk Radius in XTE J2012+381

Details Stable Inner Accretion Disk Radius in XTE J2012+381 Stable Inner Accretion Disk Radius in XTE J2012+381

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.9305z&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #93.05; Bulletin of the American Astronomical Society, Vol. 30, p.1387

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Scientific paper

The newly discovered soft X-ray transient XTE J2012+381 was monitored with PCA/RXTE during its outburst in 1998. Its energy spectrum can be well fit by a three-component model: a broad iron emission line feature between 6-7 keV, multi-color accretion disk blackbody component, and a power-law. The main result of the spectral analysis is that the inner accretion disk radius inferred from the blackbody component is consistent with being a constant during the decay phase of the outburst, during a flux decrease by a factor of 3-4. This is very similar to other black hole X-ray binaries during their outburst decay, thus may indicate that XTE J2012+381 contains also a stellar mass black hole.

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