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arXiv · 1507.04911

Decay of massive scalar field in a black hole background immersed in magnetic field

Chen Wu·Renli Xu
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Abstract

We evaluate quasinormal modes of massive scalar field of the Ernst spacetime, an exact solution of the Einstein-Maxwell equations describing a black hole immersed in uniform magnetic field $B$. It is known that the quasinormal spectrum for massive scalar field in the vicinity of the magnetized black holes acquires an effective mass $μ_{eff}= \sqrt{4B^2 m^2+μ^2}$, where $m$ is the azimuthal number and $μ$ 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 the vanishing damping rate.

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Chen Wu, Renli Xu. 2015-08-25. Decay of massive scalar field in a black hole background immersed in magnetic field. https://doi.org/10.1140/epjc%2Fs10052-015-3632-1

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