Accretion disks around black holes in scalar-tensor-vector gravity

被引：51

作者：

Perez, Daniela ^{[1
]}

Lopez Armengol, Federico G. ^{[1
]}

Romero, Gustavo E. ^{[1
,2
]}

机构：

[1] Consejo Nacl Invest Cient & Tecn, Inst Argentino Radioastron, CCT La Plata, Camino Gral Belgrano Km 40 CC5, RA-1894 Villa Elisa, Buenos Aires, Argentina

[2] UNLP, Fac Ciencias Astron & Geofis, Paseo Bosque S-N CP, RA-1900 La Plata, Buenos Aires, Argentina

来源：

PHYSICAL REVIEW D | 2017年 / 95卷 / 10期

关键词：

WEAK-FIELD APPROXIMATION; OBSERVATIONAL TEST; BINARY-SYSTEMS;

D O I：

10.1103/PhysRevD.95.104047

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Scalar-tensor-vector gravity (STVG) is an alternative theory of gravitation that has successfully explained the rotation curves of nearby galaxies, the dynamics of galactic clusters, and cosmological data without dark matter, but has hardly been tested in the strong gravity regime. In this work, we aim at building radiative models of thin accretion disks for both Schwarzschild and Kerr black holes in STVG theory. In particular, we study stable circular equatorial orbits around stellar and supermassive black holes in Schwarzschild and Kerr STVG spacetimes. We also calculate the temperature and luminosity distributions of accretion disks around these objects. We find that accretion disks in STVG around stellar and supermassive black holes are colder and less luminous than in GR. The spectral energy distributions obtained do not contradict current astronomical observations.

引用

页数：13

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