Quasinormal Modes and Strong Cosmic Censorship
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Quasinormal Modes and Strong Cosmic Censorship. / Cardoso, Vitor; Costa, Joao L.; Destounis, Kyriakos; Hintz, Peter; Jansen, Aron.
I: Physical Review Letters, Bind 120, Nr. 3, 031103, 17.01.2018.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Quasinormal Modes and Strong Cosmic Censorship
AU - Cardoso, Vitor
AU - Costa, Joao L.
AU - Destounis, Kyriakos
AU - Hintz, Peter
AU - Jansen, Aron
PY - 2018/1/17
Y1 - 2018/1/17
N2 - The fate of Cauchy horizons, such as those found inside charged black holes, is intrinsically connected to the decay of small perturbations exterior to the event horizon. As such, the validity of the strong cosmic censorship (SCC) conjecture is tied to how effectively the exterior damps fluctuations. Here, we study massless scalar fields in the exterior of Reissner-Nordstrm-de Sitter black holes. Their decay rates are governed by quasinormal modes of the black hole. We identify three families of modes in these spacetimes: one directly linked to the photon sphere, well described by standard WKB-type tools; another family whose existence and time scale is closely related to the de Sitter horizon; finally, a third family which dominates for near-extremally charged black holes and which is also present in asymptotically flat spacetimes. The last two families of modes seem to have gone unnoticed in the literature. We give a detailed description of linear scalar perturbations of such black holes, and conjecture that SCC is violated in the near extremal regime.
AB - The fate of Cauchy horizons, such as those found inside charged black holes, is intrinsically connected to the decay of small perturbations exterior to the event horizon. As such, the validity of the strong cosmic censorship (SCC) conjecture is tied to how effectively the exterior damps fluctuations. Here, we study massless scalar fields in the exterior of Reissner-Nordstrm-de Sitter black holes. Their decay rates are governed by quasinormal modes of the black hole. We identify three families of modes in these spacetimes: one directly linked to the photon sphere, well described by standard WKB-type tools; another family whose existence and time scale is closely related to the de Sitter horizon; finally, a third family which dominates for near-extremally charged black holes and which is also present in asymptotically flat spacetimes. The last two families of modes seem to have gone unnoticed in the literature. We give a detailed description of linear scalar perturbations of such black holes, and conjecture that SCC is violated in the near extremal regime.
KW - BLACK-HOLE
KW - WAVE-EQUATION
KW - ASYMPTOTICS
KW - INTERIOR
KW - ENERGY
U2 - 10.1103/PhysRevLett.120.031103
DO - 10.1103/PhysRevLett.120.031103
M3 - Journal article
VL - 120
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 3
M1 - 031103
ER -
ID: 299202647