Quasinormal modes of a Schwarzschild black hole immersed in an electromagnetic universe

ALI OVGUN , Izzet Sakalli, JOEL FRANCISCO SAAVEDRA ALVEAR

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Abstract

We study the quasinormal modes (QNMs) of a Schwarzschild black hole immersed in an electromagnetic (EM) universe. The immersed Schwarzschild black hole (ISBH) originates from the metric of colliding EM waves with double polarization [Class. Quantum Grav. 12, 3013 (1995)]. The perturbation equations of the scalar fields for the ISBH geometry are written in the form of separable equations. We show that these equations can be transformed to the confluent Heun's equations, for which we are able to use known techniques to perform analytical quasinormal (QNM) analysis of the solutions. Furthermore, we employ numerical methods (Mashhoon and 6th-order Wentzel-Kramers-Brillouin (WKB)) to derive the QNMs. The results obtained are discussed and depicted with the appropriate plots.

Original languageEnglish
Article number105102
JournalChinese Physics C
Volume42
Issue number10
DOIs
StatePublished - 1 Oct 2018

Keywords

  • electromagnetic universe
  • heun functions
  • quasinormal modes
  • scalar particles
  • Schwarzschild
  • wave scattering

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