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We study the capture of dark matter particles by neutron stars in closebinary systems. By performing a direct numerical simulation, we find that thereis a sizable amplification of the rate of dark matter capture by each of thecompanions. In case of the binary pulsar PSR J1906+0746 with the orbital periodof 4 hours the amplification factor is 3.5. This amplification can beattributed to the energy loss by dark matter particles resulting from theirgravitational scattering off moving companions.

Enhancement of dark matter capture by neutron stars in binary systems