Superradiant instability of charged extremal black holes in Einstein-Born-Infeld gravity
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2024)003
Abstract: We study charged scalar perturbations of charged extremal black holes in Einstein-Born-Infeld theory. Our numerical results indicate that these black holes all suffer from superradiant instability by the unstable quasi-bound states, regardless how small the… read more here.
Keywords: black holes; gravity; einstein born; extremal black ... See more keywords
Rotating black holes in Einstein-aether theory
Sign Up to like & getrecommendations! Published in 2022 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ac5053
Abstract: We introduce new methods to numerically construct for the first time stationary axisymmetric black hole solutions in Einstein-aether theory and study their properties. The key technical challenge is to impose regularity at the spin-2, 1,… read more here.
Keywords: aether theory; region; black holes; holes einstein ... See more keywords
Black holes in Einstein-aether theory: Quasinormal modes and time-domain evolution
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.024076
Abstract: We propose accurate calculations of quasinormal modes of black holes in the Einstein-aether theory, which were previously considered in the literature, partially, with insufficient accuracy. We also show that the arbitrarily long lived modes, quasi-resonances,… read more here.
Keywords: theory quasinormal; holes einstein; einstein aether; black holes ... See more keywords
Constructing Higher-Dimensional Exact Black Holes in Einstein-Maxwell-Scalar Theory
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DOI: 10.3390/universe6090148
Abstract: We construct higher-dimensional and exact black holes in Einstein-Maxwell-scalar theory. The strategy we adopted is to extend the known, static and spherically symmetric black holes in the Einstein-Maxwell dilaton gravity and Einstein-Maxwell-scalar theory. Then we… read more here.
Keywords: einstein maxwell; black holes; holes einstein; maxwell scalar ... See more keywords