Massive scalar field perturbations of black holes surrounded by dark matter
Massive scalar field perturbations of black holes surrounded by dark matter
Authors
Becar, Ramon
Gonzalez, P. A.
Papantonopoulos, Eleftherios
Vasquez, Yerko
Gonzalez, P. A.
Papantonopoulos, Eleftherios
Vasquez, Yerko
Profesor GuĆa
Authors
Date
Datos de publicaciĆ³n:
10.1140/epjc/s10052-024-12553-8
EUROPEAN PHYSICAL JOURNAL C,Vol.84,2024
EUROPEAN PHYSICAL JOURNAL C,Vol.84,2024
Tipo de recurso
Article
Keywords
Materia geogrƔfica
Collections
Abstract
We consider scalar field perturbations in the background of black holes immersed in perfect fluid dark matter (PFDM). We find, by using the sixth-order Wentzel-Kramers-Brillouin (WKB) approximation, that the longest-lived modes are those with a higher angular number for a scalar field mass smaller than a critical value, known as the anomalous decay rate of the quasinormal modes, while beyond this critical value the opposite behavior is observed. Moreover, we show that it is possible to recover the real part of the quasinormal frequencies (QNFs), the imaginary part of the QNFs, and the critical scalar field mass of the Schwarzschild background for different values of the PFDM intensity parameter k. For values of k smaller than these values, the abovementioned quantities are greater than the Schwarzschild background. However, beyond these values of k, these quantities are smaller than the Schwarzschild background.