Dynamical effects on binary X-ray sources in dense stellar clusters

Abstract

view Abstract Citations (17) References (17) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Dynamical effects on binary X-ray sources in dense stellar clusters. Shull, J. M. Abstract We examine the model in which the globular-cluster X-ray sources are binaries. Collisions of field stars in cores of dense clusters may shrink the orbits of tightly bound ('hard') binaries, with important consequences for the evolution of X-ray sources if one component is a collapsed star. Exchange capture of field stars enables the binary to recycle its mass supplier and to undergo a number of intermittent stages of X-ray activity. 'Hard' binaries may be formed by three-body encounters or by two-body tidal capture in clusters with large core densities and low velocity dispersions. Alternatively, as suggested by Hills, such objects may form by neutron-star or black-hole capture in exchange collisions with primordial binaries. Publication: The Astrophysical Journal Pub Date: July 1979 DOI: 10.1086/157215 Bibcode: 1979ApJ...231..534S Keywords: Astronomical Models; Binary Stars; Globular Clusters; Star Clusters; Stellar Evolution; X Ray Sources; Black Holes (Astronomy); Gravitational Fields; Mass Transfer; Neutron Stars; Astrophysics; Globular Clusters:X-Ray Binaries; Stellar Dynamics:X-Ray Binaries full text sources ADS |