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arXiv 2201.08854gr-qcastro-ph.COhep-th
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超轻暗物质中黑洞的动力学摩擦

Dynamical friction of black holes in ultralight dark matter

Rodrigo Vicente, Vitor Cardoso

摘要:

在这项工作中,我们推导出简单的封闭形式的表达式的动态摩擦力作用于黑洞移动通过超轻(标量场)暗物质,涵盖非相对论和相对论黑洞的速度。我们的推导是基于黑洞时空中已知的散射振幅,它包括了黑洞自旋的影响,并且可以很容易地推广到矢量光场和张量光场。我们的研究结果涵盖和补充了最近的数值和以前的非相对论处理的动力学摩擦超轻暗物质。

英文摘要:

In this work we derive simple closed-form expressions for the dynamical friction acting on black holes moving through ultralight (scalar field) dark matter, covering both non-relativistic and relativistic black hole speeds. Our derivation is based on long known scattering amplitudes in black hole spacetimes, it includes the effect of black hole spin and can be easily extended to vector and tensor light fields. Our results cover and complement recent numerical and previous non-relativistic treatments of dynamical friction in ultralight dark matter.

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