Tuesday, November 15, 2011

1111.3205 (Lionel Brayeur et al.)

Enhancement of dark matter capture by neutron stars in binary systems    [PDF]

Lionel Brayeur, Peter Tinyakov
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.
View original: http://arxiv.org/abs/1111.3205

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