Dynamical friction of black holes in ultralight dark matter

被引:57
作者
Vicente, Rodrigo [1 ]
Cardoso, Vitor [2 ,3 ]
机构
[1] Barcelona Inst Sci & Technol, Inst Fis Altes Energies IFAE, Campus UAB, Bellaterra 08193, Barcelona, Spain
[2] Univ Lisboa UL, Ctr Astrofis & Gravitacao, CENTRA, Dept Fis,Inst Super Tecn,IST, Ave Rovisco Pais 1, P-1049001 Lisbon, Portugal
[3] Niels Bohr Int Acad, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
基金
新加坡国家研究基金会;
关键词
MASSLESS SCALAR WAVES; SCATTERING; DENSITY; ABSORPTION; PARTICLES; GALAXIES; CHARGE; FIELD;
D O I
10.1103/PhysRevD.105.083008
中图分类号
P1 [天文学];
学科分类号
0704 ;
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 nonrelativistic 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 nonrelativistic treatments of dynamical friction in ultralight dark matter.
引用
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页数:18
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