双星系统中中子星对暗物质捕获的增强
Enhancement of dark matter capture by neutron stars in binary systems
摘要：
我们研究了密近双星系统中中子星对暗物质粒子的捕获。通过进行直接的数值模拟，我们发现，有一个相当大的放大率的暗物质捕获的每一个同伴。对于轨道周期为4小时的脉冲双星PSR J1906+0746，放大因子为3.5。这种放大可以归因于暗物质粒子因其引力散射运动的同伴而造成的能量损失。
英文摘要：
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.
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