Relativistic drag forces on black holes from scalar dark matter clouds of all sizes
Relativistic drag forces on black holes from scalar dark matter clouds of all sizes
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DOI：
10.1103/physrevd.108.l121502
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发表时间：
2023-05
影响因子：
5
通讯作者：
D. Traykova;R. Vicente;K. Clough;T. Helfer;E. Berti;P. Ferreira;L. Hui
中科院分区：
文献类型：
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作者：
D. Traykova;R. Vicente;K. Clough;T. Helfer;E. Berti;P. Ferreira;L. Hui
我们使用数值模拟的标量场暗物质的发展在一个移动的黑洞背景，以确认制度的有效性（半）解析表达式来自第一原理的动力学摩擦和动量吸积在相对论制度。我们涵盖了小的和大的云（相对于标量的布罗意波长），轻的和重的粒子质量（相对于BH的大小）。在小的暗物质云的情况下，吸积效应对黑洞的总作用力是不可忽略的贡献，即使是小的标量质量。我们确认，这两个政权（波和粒子）之间的动量吸积过渡，我们确定的质量的标量在政权之间的过渡发生。
We use numerical simulations of scalar field dark matter evolving on a moving black hole background to confirm the regime of validity of (semi-)analytic expressions derived from first principles for both dynamical friction and momentum accretion in the relativistic regime. We cover both small and large clouds (relative to the de Broglie wavelength of the scalars), and light and heavy particle masses (relative to the BH size). In the case of a small dark matter cloud, the effect of accretion is a non-negligible contribution to the total force on the black hole, even for small scalar masses. We confirm that this momentum accretion transitions between two regimes (wave- and particle-like) and we identify the mass of the scalar at which the transition between regimes occurs.