7 citations · 22 across the 15 of their papers we have counts for
9 papers · 1 filter
Quasinormal-mode analysis of a massive scalar field in a Schwarzschild background via the spectral method
Davide Batic, Anna Chrysostomou, Alan S. Cornell +1
We study the massive scalar quasinormal-mode spectral problem on a Schwarzschild background using an extended Chebyshev spectral method. The massive dispersion relation has a two-s…
Gravitationally-decoupled hairy black holes: probing geometric, optical, and quasinormal mode signatures
Paul Allen M. Gonzales, Anna Chrysostomou, Alan S. Cornell +1
Gravitational-decoupling provides a systematic framework for constructing black hole geometries from known (seed) solutions (such as the Schwarzschild), whose exterior properties c…
Quasinormal frequencies in Reissner-Nordström de Sitter black holes: constraints from space-time and scalar field parameters
Anna Chrysostomou, Alan S. Cornell, Aldo Deandrea +1
We examine the quasinormal modes exhibited by a massive scalar test field carrying an electric charge, oscillating in the outer region of a Reissner-Nordström de Sitter black hole.…
A note on Strong Cosmic Censorship and its violation in Reissner-Nordström de Sitter black hole space-times
Anna Chrysostomou, Alan S. Cornell, Aldo Deandrea +1
Penrose's Strong Cosmic Censorship conjecture safeguards determinism in General Relativity. Within the initial value approach to General Relativity, proof of Strong Cosmic Censorsh…
A semi-analytic treatment of quasinormal excitation factors in the eikonal regime
Chun-Hung Chen, Hing-Tong Cho, Anna Chrysostomou +1
In this paper, we present an enhanced semi-analytic method for calculating quasinormal excitation factors in the eikonal regime, specifically for Schwarzschild black holes. To achi…
Reissner-Nordström black holes in de Sitter space-time: bounds with quasinormal frequencies
Anna Chrysostomou, Alan S. Cornell, Aldo Deandrea +2
Rich physics can be divined from charged black holes subjected to extremal conditions. When applied in conjunction with principles like Weak Cosmic Censorship, this naturally leads…
Black holes and nilmanifolds: quasinormal modes as the fingerprints of extra dimensions?
Anna Chrysostomou, Alan Cornell, Aldo Deandrea +2
We investigate whether quasinormal modes (QNMs) can be used in the search for signatures of extra dimensions. To address a gap in the Beyond the Standard Model (BSM) literature, we…
Asymptotic quasinormal frequencies of different spin fields in -dimensional spherically-symmetric black holes
Chun-Hung Chen, Hing-Tong Cho, Anna Chrysostomou +1
While Hod's conjecture is demonstrably restrictive, the link he observed between black hole (BH) area quantisation and the large overtone () limit of quasinormal frequencies (QN…
Quasinormal modes for integer and half-integer spins within the large angular momentum limit
Chun-Hung Chen, Hing-Tong Cho, Anna Chrysostomou +1
While independent observations have been made regarding the behaviour of effective quasinormal mode (QNM) potentials within the large angular momentum limit, we demonstrate analyti…