Accretion onto a higher dimensional black hole

被引:58
作者
John, Anslyn J. [1 ]
Ghosh, Sushant G. [1 ,2 ]
Maharaj, Sunil D. [1 ]
机构
[1] Univ KwaZulu Natal, Sch Math Stat & Comp Sci, Astrophys & Cosmol Res Unit, ZA-4000 Durban, South Africa
[2] Jamia Millia Islamia, Ctr Theoret Phys, New Delhi 110025, India
来源
PHYSICAL REVIEW D | 2013年 / 88卷 / 10期
基金
新加坡国家研究基金会;
关键词
EMERGENT RADIATION SPECTRUM; MATTER;
D O I
10.1103/PhysRevD.88.104005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We examine the steady-state spherically symmetric accretion of relativistic fluids, with a polytropic equation of state, onto a higher-dimensional Schwarzschild black hole. The mass accretion rate, critical radius, and flow parameters are determined and compared with results obtained in standard four dimensions. The accretion rate, (M) over dot, is an explicit function of the black hole mass, M, as well as the gas boundary conditions and the dimensionality, D, of the spacetime. We also find the asymptotic compression ratios and temperature profiles below the accretion radius and at the event horizon. This analysis is a generalization of Michel's solution to higher dimensions and of the Newtonian expressions of Giddings and Mangano, which consider the accretion of TeV black holes.
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页数:7
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