Enhancement of dark matter capture by neutron stars in binary systems
Cosmology and Nongalactic Astrophysics
2013-05-30 v1
Abstract
We study the capture of dark matter particles by neutron stars in close binary systems. By performing a direct numerical simulation, we find that there is a sizable amplification of the rate of dark matter capture by each of the companions. In case of the binary pulsar PSR J1906+0746 with the orbital period of 4 hours the amplification factor is 3.5. This amplification can be attributed to the energy loss by dark matter particles resulting from their gravitational scattering off moving companions.
Keywords
Cite
@article{arxiv.1111.3205,
title = {Enhancement of dark matter capture by neutron stars in binary systems},
author = {Lionel Brayeur and Peter Tinyakov},
journal= {arXiv preprint arXiv:1111.3205},
year = {2013}
}
Comments
4 pages, 1 figure