https://doi.org/10.1140/epjc/s10052-015-3632-1
Regular Article - Theoretical Physics
Decay of massive scalar field in a black hole background immersed in magnetic field
1
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China
2
Key Laboratory of Modern Acoustics, Department of Physics, Nanjing University, Nanjing, 210093, China
* e-mail: wuchenoffd@gmail.com
Received:
16
July
2015
Accepted:
17
August
2015
Published online:
27
August
2015
We evaluate quasinormal modes of a massive scalar field of the Ernst spacetime, an exact solution of the Einstein–Maxwell equations, describing a black hole immersed in a uniform magnetic field B. It is well known that the quasinormal spectrum for a massive scalar field in the vicinity of the magnetized black holes acquires an effective mass 
, where m is the azimuthal number and 
is the mass of scalar field. The numerical result shows that increasing of the field effective mass and the magnetic field B gives rise to decreasing of the imaginary part of the quasinormal modes until reaching a vanishing damping rate.
© The Author(s), 2015
