Bondi-Hoyle-Lyttleton Accretion Model for Low-luminosity X-ray Sources in Globular Clusters

Preprint

13 September 2000

preprint
Published by arXiv in arXiv

Abstract

We present a new model for low-luminosity X-ray sources in globular clusters, with L_x < 10^34 erg/s. The model we propose is that of a single neutron star accreting from cluster gas that has accumulated as a natural product of stellar evolution. An analytic luminosity function is derived under the assumption that the speed distribution of neutron stars in the central region of a cluster is described by a Maxwellian. Predictions of the model and implications for the gas content of globular clusters are discussed.

Keywords

SOURCES IN GLOBULAR
LUMINOSITY FUNCTION
GLOBULAR CLUSTERS
NATURAL PRODUCT
LOW LUMINOSITY
MODEL FOR LOW
NEUTRON STARS
LUMINOSITY X
ACCRETION

All Related Versions

Version 1, 2000-09-13, ArXiv
Version 2, 2000-11-23, ArXiv
Published version: The Astrophysical Journal, 550 (1), 172.

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