2.1k citations · 15.5k across the 182 of their papers we have counts for
181 papers
Constraining the geometry of rotating black holes with eikonal QNMs
Ciro De Simone, Sebastian H. Völkel, Kostas D. Kokkotas
Quasinormal modes of black holes provide a central avenue for confronting general relativity with gravitational-wave observations from the ringdown stage of compact binary coalesce…
Tidally-enhanced resonances in extreme-mass-ratio inspirals: A tertiary path to chaos
Kyriakos Destounis, Takuya Katagiri, Sajal Mukherjee +1
Extreme-mass-ratio inspirals (EMRIs) provide a unique laboratory for probing strong-field gravity and complex relativistic dynamics. We study a tidally deformed EMRI composed of a…
Parametrized beyond-Teukolsky framework in the time domain
Ciro De Simone, Sebastian H. Völkel, Kostas D. Kokkotas +1
Modifications to General Relativity can significantly alter the perturbative response of black holes, leaving imprints on quasinormal-mode spectra, waveform amplitudes and phases,…
Magnetorotational instabilities in solids: Application to neutron-star crusts
Arthur G. Suvorov, Thomas Celora, Kostas D. Kokkotas
The magnetorotational instability can generate strong, turbulent substructure within magnetized shear flows. The efficacy of the mechanism as a function of microphysical aspects of…
Modeling X-ray reflection spectra from returning radiation: application to 4U 163047
Kostas Kourmpetis, Shafqat Riaz, Honghui Liu +6
Returning radiation is thought to play a key role in disk illumination of black hole X-ray binaries in the high-soft state, yet it has not been fully incorporated into XSPEC reflec…
Confronting eikonal and post-Kerr methods with numerical evolution of scalar field perturbations in spacetimes beyond Kerr
Ciro De Simone, Sebastian H. Völkel, Kostas D. Kokkotas +2
The accurate computation of quasinormal modes from rotating black holes beyond general relativity is crucial for testing fundamental physics with gravitational waves. In this study…