Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-08-28
Astrophys.J.642:427-437,2006
Astronomy and Astrophysics
Astrophysics
11 pages, 8 figures, submitted to ApJ
Scientific paper
10.1086/500727
While many observed ultra-luminous X-ray sources (ULXs, Lx > 10^39 erg s^-1) could be extragalactic X-ray binaries (XRBs) emitting close to the Eddington limit, the highest-luminosity ULXs (Lx > 3x10^39 erg s^-1) exceed the isotropic Eddington luminosity for even high-stellar-mass accreting black hole XRBs. It has been suggested that these highest-luminosity ULXs may contain accreting intermediate-mass black hole (IMBH) binaries. We consider this hypothesis for dense, young (about 100 Myr) stellar clusters where we assume that a 50-500 solar mass central IMBH has formed through runaway growth of a massive star. Using numerical simulations of the dynamics and evolution of the central black hole's captured companions, we obtain estimates of the incidence of mass transfer phases and possible ULX activity throughout the IMBH's evolutionary history. We find that, although it is common for the central black hole to acquire binary companions, there is a very low probability that these interacting binaries will become observable ULX sources.
Belczynski Krzysztof
Blecha Laura
Fregeau John
Ivanova Natalia
Kalogera Vassiliki
No associations
LandOfFree
Close Binary Interactions of Intermediate-Mass Black Holes: Possible Ultra-Luminous X-ray Sources? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Close Binary Interactions of Intermediate-Mass Black Holes: Possible Ultra-Luminous X-ray Sources?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Close Binary Interactions of Intermediate-Mass Black Holes: Possible Ultra-Luminous X-ray Sources? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-187124