Destabilizing the Fundamental Mode of Black Holes: The Elephant and the Flea
Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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Destabilizing the Fundamental Mode of Black Holes : The Elephant and the Flea. / Cheung, Mark; Destounis, Kyriakos; Macedo, Rodrigo Panosso; Bertil, Emanuaele; Cardoso, Vitor.
I: Physical Review Letters, Bind 128, Nr. 11, 111103, 18.03.2022.Publikation: Bidrag til tidsskrift › Letter › Forskning › fagfællebedømt
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TY - JOUR
T1 - Destabilizing the Fundamental Mode of Black Holes
T2 - The Elephant and the Flea
AU - Cheung, Mark
AU - Destounis, Kyriakos
AU - Macedo, Rodrigo Panosso
AU - Bertil, Emanuaele
AU - Cardoso, Vitor
PY - 2022/3/18
Y1 - 2022/3/18
N2 - Recent work applying the notion of pseudospectrum to gravitational physics showed that the quasinormal mode spectrum of black holes is unstable, with the possible exception of the longest-lived (fundamental) mode. The fundamental mode dominates the expected signal in gravitational wave astronomy, and there is no reason why it should have privileged status. We compute the quasinormal mode spectrum of two model problems where the Schwarzschild potential is perturbed by a small "bump" consisting of either a Poschl-Teller potential or a Gaussian, and we show that the fundamental mode is destabilized under generic perturbations. We present phase diagrams and study a simple double-barrier toy problem to clarify the conditions under which the spectral instability occurs.
AB - Recent work applying the notion of pseudospectrum to gravitational physics showed that the quasinormal mode spectrum of black holes is unstable, with the possible exception of the longest-lived (fundamental) mode. The fundamental mode dominates the expected signal in gravitational wave astronomy, and there is no reason why it should have privileged status. We compute the quasinormal mode spectrum of two model problems where the Schwarzschild potential is perturbed by a small "bump" consisting of either a Poschl-Teller potential or a Gaussian, and we show that the fundamental mode is destabilized under generic perturbations. We present phase diagrams and study a simple double-barrier toy problem to clarify the conditions under which the spectral instability occurs.
U2 - 10.1103/PhysRevLett.128.111103
DO - 10.1103/PhysRevLett.128.111103
M3 - Letter
C2 - 35363003
VL - 128
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
M1 - 111103
ER -
ID: 305689835