The slim-disk state of the ultraluminous X-ray source in M83
MetadataShow full item record
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 ≈1-3 × 1039 erg s–1 (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.
This is an author-created, un-copy edited version of an article accepted for publication in Astrophysical Journal. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://doi.org/10.1088/0004-637X/799/2/140
Showing items related by title, author, creator and subject.
Tomsick, J.; Rahoui, F.; Kolehmainen, M.; Miller-Jones, James; Fürst, F.; Yamaoka, K.; Akitaya, H.; Corbel, S.; Coriat, M.; Done, C.; Gandhi, P.; Harrison, F.; Huang, K.; Kaaret, P.; Kalemci, E.; Kanda, Y.; Migliari, S.; Miller, J.; Moritani, Y.; Stern, D.; Uemura, M.; Urata, Y. (2015)We report on multiwavelength measurements of the accreting black hole Swift J1753.5–0127 in the hard state at low luminosity (L ~ 2.7 × 1036 erg s−1 assuming a distance of d = 3 kpc) in 2014 April. The radio emission is ...
Soria, Roberto; Kuncic, Z. (2008)We summarize indirect empirical arguments used for estimating black hole (BH) masses in ultraluminous X-ray sources (ULXs). The interpretation of the X-ray data is still too model-dependent to provide tight constraints, ...
Kennea, J.; Romano, P.; Mangano, V.; Beardmore, A.; Evans, P.; Curran, Peter; Krimm, H.; Markwardt, C.; Yamaoka, K. (2011)We report on the detection and follow-up high-cadence monitoring observations of MAXI J1659-152, a brightGalactic X-ray binary transient with a likely black hole accretor, by Swift over a 27 day period after its initialoutburst ...