29 citations · 95 across the 8 of their papers we have counts for
8 papers
Exceptional points of the Schwarzschild spectrum under local potential perturbation: The Princess and the Pea
Mohamed Ould El Hadj, Sam R. Dolan
Black-hole quasinormal modes (QNMs) may coalesce at exceptional points (EPs) in the frequency spectrum. We study EPs and their phenomenology for gravitational perturbations of a Sc…
Ringdown and echoes from compact objects: Debye series and Debye quasinormal modes
Mohamed Ould El Hadj, Sam R. Dolan
We introduce a new series decomposition of the waveform constructed in the spirit of Debye expansions in scattering theory, and we use this to analyse the time-domain response of c…
Black hole absorption cross sections: Spin and Regge poles
Mohamed Ould El Hadj
We investigate the absorption of massless scalar, electromagnetic, and gravitational fields propagating in the Schwarzschild black hole geometry. Using complex angular momentum tec…
Regge pole description of scattering of gravitational waves by a Schwarzschild black hole
Antoine Folacci, Mohamed Ould El Hadj
We revisit the problem of plane monochromatic gravitational waves impinging upon a Schwarzschild black hole using complex angular momentum techniques. By extending our previous stu…
Regge pole description of scattering of scalar and electromagnetic waves by a Schwarzschild black hole
Antoine Folacci, Mohamed Ould El Hadj
We revisit the problem of scalar and electromagnetic waves impinging upon a Schwarzschild black hole from complex angular momentum techniques. We focus more particularly on the ass…
An alternative description of gravitational radiation from black holes based on the Regge poles of the -matrix and the associated residues
Antoine Folacci, Mohamed Ould El Hadj
We advocate for an alternative description of gravitational radiation from black holes based on complex angular momentum techniques (analytic continuation of partial wave expansion…
Multipolar gravitational waveforms and ringdowns generated during the plunge from the innermost stable circular orbit into a Schwarzschild black hole
Antoine Folacci, Mohamed Ould El Hadj
We study the gravitational radiation emitted by a massive point particle plunging from slightly below the innermost stable circular orbit into a Schwarzschild black hole. We consid…
Electromagnetic radiation generated by a charged particle plunging into a Schwarzschild black hole: Multipolar waveforms and ringdowns
Antoine Folacci, Mohamed Ould El Hadj
Electromagnetic radiation emitted by a charged particle plunging from slightly below the innermost stable circular orbit into a Schwarzschild black hole is examined. Both even- and…