From the 2 of 6 linked papers with an AI index.
6 papers
Optimal frequency scales for probing black-hole geometries
Saulo Albuquerque, Sebastian H. Völkel
Can gravitational waves probe the near-horizon geometry of black holes, and if yes, which frequency scale is optimal? Although shorter wavelengths usually resolve smaller scales, w…
Constraining deviations from the Teukolsky equation with GW250114
Sebastian H. Völkel, Nicola Franchini
The paper uses the GW250114 gravitational‑wave event to place the first theory‑agnostic limits on possible deviations from the Teukolsky equation, linking changes in the effective…
Parametrized beyond-Teukolsky framework in the time domain
Ciro De Simone, Sebastian H. Völkel, Kostas D. Kokkotas +1
The authors develop a time‑domain implementation of the parametrized beyond‑Teukolsky framework to study how modifications to General Relativity affect black‑hole perturbations, an…
Ringdown spectroscopy of phenomenologically modified black holes
Spyros Thomopoulos, Sebastian H. Völkel, Harald P. Pfeiffer
The characteristic oscillations of black holes, as described by their quasinormal mode (QNM) spectrum, play a fundamental role in testing general relativity with gravitational wave…
Black hole spectroscopy: from theory to experiment
Emanuele Berti, Vitor Cardoso, Gregorio Carullo +70
The "ringdown" radiation emitted by oscillating black holes has great scientific potential. By carefully predicting the frequencies and amplitudes of black hole quasinormal modes a…
Bound States of the Schwarzschild Black Hole
Sebastian H. Völkel
Understanding the physical significance and spectral stability of black hole quasinormal modes is fundamental to high-precision spectroscopy with future gravitational wave detector…