Black holes in galaxies: Environmental impact on gravitational-wave generation and propagation

被引：132

作者：

Cardoso, Vitor ^{[1
,2
]}

Destounis, Kyriakos ^{[3
]}

Duque, Francisco ^{[2
]}

Macedo, Rodrigo Panosso ^{[2
,4
]}

Maselli, Andrea ^{[5
,6
]}

机构：

[1] Niels Bohr Inst, Niels Bohr Int Acad, Blegdamsvej 17, DK-2100 Copenhagen, Denmark

[2] Univ Lisboa UL, Inst Super Tecn IST, Dept Fis, CENTRA, Ave Rovisco Pais 1, P-1049 Lisbon, Portugal

[3] Univ Tubingen, IAAT, Theoret Astrophys, D-72076 Tubingen, Germany

[4] Univ Southampton, STAG Res Ctr, Univ Rd, Southampton SO17 1BJ, Hants, England

[5] Gran Sasso Sci Inst GSSI, I-67100 Laquila, Italy

[6] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Assergi, Italy

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 06期

关键词：

DARK-MATTER; SPHERICAL GALAXIES; RADIATION; MODELS; FIELD; PERTURBATIONS; OSCILLATIONS; INSTABILITY; PULSATION; EXISTENCE;

D O I：

10.1103/PhysRevD.105.L061501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We introduce a family of solutions of Einstein's gravity minimally coupled to an anisotropic fluid, describing asymptotically flat black holes with "hair" and a regular horizon. These spacetimes can describe the geometry of galaxies harboring supermassive black holes, and are extensions of Einstein clusters to include horizons. They are useful to constrain the environment surrounding astrophysical black holes, using electromagnetic or gravitational-wave observations. We compute the main properties of the geometry, including the corrections to the ringdown stage induced by the external matter and fluxes by orbiting particles. The leading order effect to these corrections is a gravitational-redshift, but gravitational-wave propagation is affected by the galactic potential in a nontrivial way, and may be characterized with future observatories.

引用

页数：7

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