Modified theories of gravity: Why, how and what?
S Shankaranarayanan, JP Johnson - General Relativity and Gravitation, 2022 - Springer
General relativity (GR) was proven via the direct detection of gravitational waves from the
mergers of the binary black holes and binary neutron stars by the advanced LIGO and …
mergers of the binary black holes and binary neutron stars by the advanced LIGO and …
Testing general relativity with present and future astrophysical observations
One century after its formulation, Einstein's general relativity (GR) has made remarkable
predictions and turned out to be compatible with all experimental tests. Most of these tests …
predictions and turned out to be compatible with all experimental tests. Most of these tests …
Nonlinear electrodynamics effects on the black hole shadow, deflection angle, quasinormal modes and greybody factors
In this paper, we discuss the effects of nonlinear electrodynamics (NED) on non-rotating
black holes, parametrized by the field coupling parameter β and magnetic charge parameter …
black holes, parametrized by the field coupling parameter β and magnetic charge parameter …
Modified gravity and cosmology
The dawn of the twenty-first century came with very positive prospects for gravity, cosmology,
and astrophysics. Technological progress made it possible for cosmology to enter to its …
and astrophysics. Technological progress made it possible for cosmology to enter to its …
[HTML][HTML] Shadow, lensing, quasinormal modes, greybody bounds and neutrino propagation by dyonic ModMax black holes
Motivated by recent work on the Modified Maxwell (ModMax) black holes [Phys Lett B
10.1016/j. physletb. 2020.136011], which are invariant in duality rotations and conformal …
10.1016/j. physletb. 2020.136011], which are invariant in duality rotations and conformal …
Quasinormal modes, stability and shadows of a black hole in the 4D Einstein–Gauss–Bonnet gravity
RA Konoplya, AF Zinhailo - The European Physical Journal C, 2020 - Springer
Recently a D-dimensional regularization approach leading to the non-trivial (3+ 1)(3+ 1)-
dimensional Einstein–Gauss–Bonnet (EGB) effective description of gravity was formulated …
dimensional Einstein–Gauss–Bonnet (EGB) effective description of gravity was formulated …
Agnostic black hole spectroscopy: Quasinormal mode content of numerical relativity waveforms and limits of validity of linear perturbation theory
Black hole spectroscopy is the program to measure the complex gravitational wave
frequencies of merger remnants, and to quantify their agreement with the characteristic …
frequencies of merger remnants, and to quantify their agreement with the characteristic …
Is the gravitational-wave ringdown a probe of the event horizon?
It is commonly believed that the ringdown signal from a binary coalescence provides a
conclusive proof for the formation of an event horizon after the merger. This expectation is …
conclusive proof for the formation of an event horizon after the merger. This expectation is …
Investigating the connection between generalized uncertainty principle and asymptotically safe gravity in black hole signatures through shadow and quasinormal …
The links between the deformation parameter β of the generalized uncertainty principle
(GUP) to the two free parameters ω^ and γ of the running Newtonian coupling constant of …
(GUP) to the two free parameters ω^ and γ of the running Newtonian coupling constant of …
Higher order WKB formula for quasinormal modes and grey-body factors: recipes for quick and accurate calculations
RA Konoplya, A Zhidenko… - Classical and Quantum …, 2019 - iopscience.iop.org
The WKB approach for finding quasinormal modes of black holes, suggested in Schutz and
Will (1985 Astrophys. J. Lett. 291 L33–6) by Schutz and Will at the first order and later …
Will (1985 Astrophys. J. Lett. 291 L33–6) by Schutz and Will at the first order and later …