SIMBAD references

2015ApJ...799..140S - Astrophys. J., 799, 140 (2015/February-1)

The slim-disk state of the ultraluminous X-ray source in M83.

SORIA R., KUNTZ K.D., LONG K.S., BLAIR W.P., PLUCINSKY P.P. and WINKLER P.F.

Abstract (from CDS):

The transient ULX in M83 that went into outburst in, or shortly before, 2010 is still active. Our new XMM-Newton spectra show that it has a curved spectrum typical of the upper end of the high/soft state or slim-disk state. It appears to be spanning the gap between Galactic stellar-mass black holes (BHs) and the ultraluminous state, at X-ray luminosities of ~1-3x1039 erg/s (a factor of two lower than in the 2010 and 2011 Chandra observations). From its broadened disk-like spectral shape at that luminosity, and from the fitted inner-disk radius and temperature, we argue that the accreting object is an ordinary stellar-mass BH with M ∼ 10-20 M. We suggest that in the 2010 and 2011 Chandra observations, the source was seen at a higher accretion rate, resulting in a power-law-dominated spectrum with a soft excess at large radii.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - black hole physics - galaxies: individual: M83 - X-rays: binaries

Simbad objects: 12

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2020.10.01-01:36:22

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