期刊
PHYSICS LETTERS B
卷 666, 期 4, 页码 283-287出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2008.07.079
关键词
-
资金
- Japan Society for the Promotion of Science (JSPS), Japan
We consider the bound states of the massive scalar field around a rotating black hole immersed in the asymptotically uniform magnetic field. In the regime of slow black hole rotation, the Klein-Gordon equation allows separation of variables. We show that the growth rate of the instability can be amplified a few times by the magnetic field. The effect occurs because the magnetic field adds the effective mass term B vertical bar m vertical bar to the scalar field potential for a Kerr black hole. In addition, and as a by-product, we discuss the behavior of the quasinormal modes for the magnetized rotating black holes. (C) 2008 Elsevier B.V. All rights reserved.
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