SIMBAD references

2005ApJ...634L..85P - Astrophys. J., 634, L85-L88 (2005/November-3)

X-ray and optical eclipses in ultraluminous X-ray sources as possible indicators of black hole mass.

POOLEY D. and RAPPAPORT S.

Abstract (from CDS):

Ultraluminous X-ray sources (ULXs) with 1039 ergs/s ≲ LX< 1041 ergs/s have been discovered in great numbers in external galaxies with ROSAT, Chandra, and XMM-Newton. The central question regarding this important class of sources is whether they represent an extension to the luminosity function of binary X-ray sources containing neutron stars and stellar-mass black holes (BHs), or a new class of objects, e.g., systems containing intermediate-mass black holes (100-1000 M). We suggest searching for X-ray and optical eclipses in these systems to provide another diagnostic to help distinguish between these two possibilities. The sense of the effect is that ULXs with stellar-mass black hole accretors should be at least twice as likely to exhibit eclipses as intermediate-mass black hole systems–and perhaps much more than a factor of 2. Among other system parameters, the orbital period would follow. This would provide considerable insight as to the nature of the binary.

Abstract Copyright:

Journal keyword(s): Accretion, Accretion Disks - Stars: Binaries: General - Black Hole Physics - Stars: Neutron - X-Rays: Binaries

Simbad objects: 23

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2020.10.25-20:57:43

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