Computer Science
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988stin...8918286v&link_type=abstract
Unknown
Computer Science
Globular Clusters, Pulsars, Star Distribution, Stars, X Ray Binaries, Stellar Evolution, Stellar Mass, Stellar Models, Stellar Orbits
Scientific paper
The presence of relatively large numbers of low-mass X-ray binaries in globular clusters is explained as a consequence of tidal capture of single neutron stars by main-sequence or giant stars. The absolute numbers of such binaries is very uncertain, due to two major uncertainties: the number of single neutron stars in globular clusters is badly known, and the life time of lowmass X-ray binaries in their active state is very uncertain. The combination of these two uncertainties leads to an uncertainty in the predicted number of lowmass X-ray binaries of a factor 100. Smaller uncertainties arise because of limited knowledge of the cross sections for the different capture processes and because the degree of mass segregation in many clusters is unknown. Wide-binary radiopulsars are formed via the evolution of the (sub) giant/neutron star binaries. Single radiopulsars can be formed when a millisecond pulsar in a binary destroys its companion, or when a third star interacts with a binary containing a rapidly rotating neutron star.
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