Kerr-Sen-like Lorentz violating black holes and Superradiance phenomena

Abstract

A Kerr-Sen-like black hole solution results from Einstein-bumblebee gravity. It contains a Lorentz violating (LV) parameter that enters when the bumblebee field receives vacuum expectation value through a spontaneously breaking of the symmetry of the classical action. The geometrical structure concerning the singularity of this spacetime is studied with reference to the parameters involved in the Kerr-Sen-like metric. We introduce this Einstein-bumblebee modified gravity to probe the role of spontaneous Lorentz violation on the superradiance scattering phenomena and the instability associated with it. We observe that for the low-frequency range of the scalar wave the superradiance scattering gets enhanced when the Lorentz-violating parameter $\ell$ takes the negative values and it reduces when values of $\ell$ are positive. The study of the black hole bomb issue reveals that for the negative values of $\ell$, the parameter space of the scalar field instability increase prominently, however, for its positive values, it shows a considerable reduction. We also tried to put constraints on the parameters contained in the Kerr-Sen-like black hole by comparing the deformation of the shadow produced by the black hole parameters with the observed deviation from circularity and the angular deviation from the $M87\ast$ data.

22 pages latex with figures. arXiv admin note: substantial text overlap with arXiv:2111.02817

References in corpus (19)

• Rotating Black Holes in Dilatonic Einstein-Gauss-Bonnet Theory
• Spontaneously scalarised Kerr black holes
• Parameter estimation of hairy Kerr black holes from its shadow and constraints from M87*
• Parameters estimation and strong gravitational lensing of nonsingular Kerr-Sen black holes
• Quasinormal frequencies for a black hole in a bumblebee gravity
• Bumblebee gravity with a Kerr-Sen-like solution and its Shadow
• Ergosphere and shadow of a rotating regular black hole
• Cosmological implications of Bumblebee vector models
• Strong field gravitational lensing by hairy Kerr black holes
• Superradiant instability of charged massive scalar field in Kerr-Newman-anti-de Sitter black hole
• Slowly rotating Einstein-bumblebee black hole solution and its greybody factor in a Lorentz violation model
• Black Hole Superradiance in the Presence of Lorentz Symmetry Violation
• Superradiant instability of Kerr-de Sitter black holes in scalar-tensor theory
• Superradiance and black hole bomb in five-dimensional minimal ungauged supergravity
• Reply to "Comment on 'Greybody radiation and quasinormal modes of Kerr-like black hole in Bumblebee gravity model' "
• Study of Einstein-bumblebee gravity with Kerr-Sen-like solution in the presence of a dispersive medium
• Astrophysical Constraints on the Bumblebee Model
• Comment on "Greybody radiation and quasinormal modes of Kerr-like black hole in Bumblebee gravity model"
• Thermal phase transition in $F(R)$-charged $Ad{S}_4$-scalar theory

Cited by in corpus (5)

• Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• Superradiant evolution of the shadow and photon ring of Sgr A${}^{\star }$
• Testing black hole mimickers with the Event Horizon Telescope image of Sagittarius A${}^{\ast }$
• Constraining the Lorentz-Violating Bumblebee Vector Field with Big Bang Nucleosynthesis and Gravitational Baryogenesis
• Superradiant energy extraction from rotating hairy Horndeski black holes