Adiabatic accretion onto black holes in Einstein-Maxwell-scalar theory

Feng, Haiyuan1; Li, Miao1; Liang, Gui-Rong1; Yang, Rong-Jia2

2022-04-01

10.1088/1475-7516/2022/04/027

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS   影响因子和分区

1475-7516

We study the adiabatic accretion process of ordinary baryonic gas onto spherically symmetric black holes in Einstein-Maxwell-scalar theory, with two parameters ?? and /3 in the coupling term. Especially, we demonstrate the range of the transonic points in terms of the charge-to-mass ratio squared and the dimensionless coordinate radius, in two important classes of black holes as examples. Further, we find that the two coupling parameters give modifications to the mass accretion rate at different orders of the sound speed at infinity. We also present their different effects on the temperature ratios of the accreted gas. JCAP04(2022)027

accretion astrophysical fluid dynamics gravity modified gravity

SCI

英语

第一 ; 通讯

National Natural Science Foundation of China[12175099,12147163] ; Hebei Provincial Natural Science Foundation of China[A2021201034]

Astronomy & Astrophysics ; Physics

Astronomy & Astrophysics ; Physics, Particles & Fields

WOS:000807377200004

IOP Publishing Ltd

SPACE SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China
2.Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China

Feng, Haiyuan,Li, Miao,Liang, Gui-Rong,et al. Adiabatic accretion onto black holes in Einstein-Maxwell-scalar theory[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2022(4).

Feng, Haiyuan,Li, Miao,Liang, Gui-Rong,&Yang, Rong-Jia.(2022).Adiabatic accretion onto black holes in Einstein-Maxwell-scalar theory.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(4).

Feng, Haiyuan,et al."Adiabatic accretion onto black holes in Einstein-Maxwell-scalar theory".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .4(2022).