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On the mechanism of low-mass compact object formation

S. B. Popov
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Abstract

We suggest that low-mass compact objects (hadron stars, quark stars) with $M<1 M_{\odot}$ can appear only due to fragmentation of rapidly rotating proto-neutron stars. Such low-mass stars receive large kicks due to an explosion of a lighter companion in a pair of fragments, or due to dynamical ejection of one of the lighter components in the case when three bodies are formed. As far as low-mass compact objects are expected to be slowly cooling in all popular models of thermal evolution possible candidates are expected to be found among hot high velocity sources.

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S. B. Popov. 2004-03-31. On the mechanism of low-mass compact object formation. https://arxiv.org/abs/astro-ph/0403710

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