Perturbed black holes in Einstein-dilaton-Gauss-Bonnet gravity: Stability, ringdown, and gravitational-wave emission
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Perturbed black holes in Einstein-dilaton-Gauss-Bonnet gravity : Stability, ringdown, and gravitational-wave emission. / Blazquez-Salcedo, Jose Luis; Macedo, Caio F. B.; Cardoso, Vitor; Ferrari, Valeria; Gualtieri, Leonardo; Khoo, Fech Scen; Kunz, Jutta; Pani, Paolo.
I: Physical Review D, Bind 94, Nr. 10, 104024, 10.11.2016.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Perturbed black holes in Einstein-dilaton-Gauss-Bonnet gravity
T2 - Stability, ringdown, and gravitational-wave emission
AU - Blazquez-Salcedo, Jose Luis
AU - Macedo, Caio F. B.
AU - Cardoso, Vitor
AU - Ferrari, Valeria
AU - Gualtieri, Leonardo
AU - Khoo, Fech Scen
AU - Kunz, Jutta
AU - Pani, Paolo
PY - 2016/11/10
Y1 - 2016/11/10
N2 - Gravitational waves emitted by distorted black holes-such as those arising from the coalescence of two neutron stars or black holes-carry not only information about the corresponding spacetime but also about the underlying theory of gravity. Although general relativity remains the simplest, most elegant, and viable theory of gravitation, there are generic and robust arguments indicating that it is not the ultimate description of the gravitational universe. Here, we focus on a particularly appealing extension of general relativity, which corrects Einstein's theory through the addition of terms which are second order in curvature: the topological Gauss-Bonnet invariant coupled to a dilaton. We study gravitational-wave emission from black holes in this theory and (i) find strong evidence that black holes are linearly (mode) stable against both axial and polar perturbations, (ii) discuss how the quasinormal modes of black holes can be excited during collisions involving black holes, and finally (iii) show that future ringdown detections with a large signal-to-noise ratio would improve current constraints on the coupling parameter of the theory.
AB - Gravitational waves emitted by distorted black holes-such as those arising from the coalescence of two neutron stars or black holes-carry not only information about the corresponding spacetime but also about the underlying theory of gravity. Although general relativity remains the simplest, most elegant, and viable theory of gravitation, there are generic and robust arguments indicating that it is not the ultimate description of the gravitational universe. Here, we focus on a particularly appealing extension of general relativity, which corrects Einstein's theory through the addition of terms which are second order in curvature: the topological Gauss-Bonnet invariant coupled to a dilaton. We study gravitational-wave emission from black holes in this theory and (i) find strong evidence that black holes are linearly (mode) stable against both axial and polar perturbations, (ii) discuss how the quasinormal modes of black holes can be excited during collisions involving black holes, and finally (iii) show that future ringdown detections with a large signal-to-noise ratio would improve current constraints on the coupling parameter of the theory.
KW - QUASI-NORMAL MODES
KW - RADIATION
KW - SYSTEMS
U2 - 10.1103/PhysRevD.94.104024
DO - 10.1103/PhysRevD.94.104024
M3 - Journal article
VL - 94
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 10
M1 - 104024
ER -
ID: 299820239