Equivalence of JT gravity and near-extremal black hole dynamics in higher derivative theory
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DOI: 10.1007/jhep01(2022)124
Abstract: Two derivative Jackiw-Teitelboim (JT) gravity theory captures the near-horizon dynamics of higher dimensional near-extremal black holes, which is governed by a Schwarzian action at the boundary in the near-horizon region. The partition function corresponding to… read more here.
Keywords: dynamics higher; black hole; near extremal; higher derivative ... See more keywords
Observability of spherical photon orbits in near-extremal Kerr black holes
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DOI: 10.1103/physrevd.100.044058
Abstract: We investigate the spherical photon orbits in near-extremal Kerr spacetimes. We show that the spherical photon orbits with impact parameters in a finite range converge on the event horizon. Furthermore, we demonstrate that the Weyl… read more here.
Keywords: photon orbits; spherical photon; near extremal; orbits near ... See more keywords
Transition from inspiral to plunge: A complete near-extremal trajectory and associated waveform
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DOI: 10.1103/physrevd.101.064026
Abstract: We extend the Ori and Thorne (OT) procedure to compute the transition from an adiabatic inspiral into a geodesic plunge for any spin. Our analysis revisits the validity of the approximations made in OT. In… read more here.
Keywords: inspiral plunge; plunge complete; near extremal; transition inspiral ... See more keywords
Near-extremal black holes in Weyl gravity: Quasinormal modes and geodesic instability
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DOI: 10.1103/physrevd.99.124025
Abstract: Stability criteria of nearly extreme black holes in the perturbations level is one of the interesting issues in gravitational systems. Considering the nearly extreme conformal--de Sitter black holes, in this paper, we obtain an exact… read more here.
Keywords: black holes; near extremal; weyl gravity; holes weyl ... See more keywords