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X-ray emission from neutron stars in dark clusters
Received 15 June 1996 / Accepted 15 November 1996
Two classes of neutron stars may exist in the galactic halo: neutron stars originating in the disk with high velocities and neutron stars originating in globular clusters (via Type II supernovae and/or accretion induced collapse). Moreover, the halo dark matter is likely in the form of dark clusters composed of MACHOs and cold molecular clouds. Here we propose a model in which neutron stars crossing dark clusters in the galactic halo accrete material and emit in the X-ray band. The detection of these X-ray sources whose luminosity can span several orders of magnitude from to erg s-1 could be already done by ROSAT.
Key words: dark matter Galaxy: halo neutron stars X-rays: general; stars
Send offprint requests to: G. Ingrosso
Online publication: June 30, 1998