Other
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.5907c&link_type=abstract
American Astronomical Society, 191st AAS Meeting, #59.07; Bulletin of the American Astronomical Society, Vol. 29, p.1308
Other
Scientific paper
It has recently been shown that some of the Galactic X-ray binaries harbor most possibly a black hole (BH) whose specific angular momentum is near the maximal possible value, while the BHs in some others may be slowly or not rotating (Zhang, Cui, & Chen 1997; Cui, Zhang, & Chen 1997). In this paper we discuss the possible spin-up or spin-down history of the BHs due to accretion from its companion star. If the accreted mass carries the specific angular momentum at the last stable orbit, it can spin up the BH. For A 0620-00 and GRO J1655-40, we have derived the spin-up time. The results show that given the low average mass transfer rate for A 0620-00 the BH spin is hardly affected over the Hubble time, while the relatively high rate of GRO J1655-40 might allow a significant spin-up of the BH over a time <=10(9) yrs. We argue, however, that the short lifetime of the active Roche-lobe overflow episode and the limited supply of mass from the secondary make it unlikely that the high BH spin of GRO J1655-40 is the consequence of mass accretion. Assuming various initial distributions of BH binary birth rate, as well as the initial BH mass, BH spin, and mass transfer rate from the secondary, we compute the evolution of the BH spin distributions. The relevance of the results to observations will also be discussed.
Chen Wei
Cui Wei-Wei
Zhang Shuang Nan
No associations
LandOfFree
Accretion and Spin Evolution of Black Holes in X-Ray Binaries 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 Accretion and Spin Evolution of Black Holes in X-Ray Binaries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accretion and Spin Evolution of Black Holes in X-Ray Binaries will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1174619