742 citations · 3.9k across the 49 of their papers we have counts for
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Structural aspects of the anti-de Sitter black hole pseudospectrum
Valentin Boyanov, Vitor Cardoso, Kyriakos Destounis +2
Black holes in anti-de Sitter spacetime provide an important testing ground for both gravitational and field-theoretic phenomena. In particular, the study of perturbations can be u…
Black-hole spectroscopy: quasinormal modes, ringdown stability and the pseudospectrum
Kyriakos Destounis, Francisco Duque
Black-hole spectroscopy is a powerful tool to probe the Kerr nature of astrophysical compact objects and their environment. The observation of multiple ringdown modes in gravitatio…
Spectral (in)stability of quasinormal modes and strong cosmic censorship
Aubin Courty, Kyriakos Destounis, Paolo Pani
Recent studies have shown that quasinormal modes suffer from spectral instabilities, a frailty of black holes that leads to disproportional migration of their spectra in the comple…
Slowly-rotating compact objects: the nonintegrability of Hartle-Thorne particle geodesics
Kyriakos Destounis, Kostas D. Kokkotas
X-ray astronomy provides information regarding the electromagnetic emission of active galactic nuclei and X-ray binaries. These events provide details regarding the astrophysical e…
Extreme-mass-ratio inspirals into rotating boson stars: nonintegrability, chaos, and transient resonances
Kyriakos Destounis, Federico Angeloni, Massimo Vaglio +1
General relativity predicts that black holes are described by the Kerr metric, which has integrable geodesics. This property is crucial to produce accurate waveforms from extreme-m…
Geodesics and gravitational waves in chaotic extreme-mass-ratio inspirals: the curious case of Zipoy-Voorhees black-hole mimickers
Kyriakos Destounis, Giulia Huez, Kostas D. Kokkotas
Due to the growing capacity of gravitational-wave astronomy and black-hole imaging, we will soon be able to emphatically decide if astrophysical objects lurking in galactic centers…
Analog Schwarzschild black holes of Bose-Einstein condensates in a cavity: Quasinormal modes and quasibound states
H. S. Vieira, Kyriakos Destounis, Kostas D. Kokkotas
Analog models of black holes have unequivocally proven to be extremely beneficial in providing critical information regarding black hole spectroscopy, superradiance, quantum phenom…