Scattering of particles by deformed non-rotating black holes

The European Physical Journal C

Guancheng Pei¹  Cosimo Bambi² 

[1] Department of Physics, Center for Field Theory and Particle Physics, Fudan University, 200433, Shanghai, China;Department of Physics, Center for Field Theory and Particle Physics, Fudan University, 200433, Shanghai, China;Theoretical Astrophysics, Eberhard-Karls Universität Tübingen, 72076, Tübingen, Germany;

关键词: Black Hole;    Gravitational Wave;    Accretion Disk;    Deformation Parameter;    Test Particle;   

DOI  :  10.1140/epjc/s10052-015-3799-5

来源: Springer

【 摘 要 】

We study the excitation of axial quasi-normal modes of deformed non-rotating black holes by test particles and we compare the associated gravitational wave signal with that expected in general relativity from a Schwarzschild black hole. Deviations from standard predictions are quantified by an effective deformation parameter, which takes into account deviations from both the Schwarzschild metric and the Einstein equations. We show that, at least in the case of non-rotating black holes, it is possible to test the metric around the compact object, in the sense that the measurement of the gravitational wave spectrum can constrain possible deviations from the Schwarzschild solution.

【 授权许可】

CC BY