RT Journal Article
T1 Perturbed black holes in Einstein-dilaton-Gauss-Bonnet gravity: stability, ringdown, and gravitational-wave emission
A1 Blázquez Salcedo, José Luis
A1 Macedo, Caio F.B.
A1 Cardoso, Vitor
A1 Ferrari, Valeria
A1 Gualtieri, Leonardo
A1 Khoo, Fech Scen
A1 Kunz, Jutta
A1 Pani, Paolo
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.
PB American Physical Society.
SN 2470-0010
YR 2016
FD 2016-11-10
LK https://hdl.handle.net/20.500.14352/101302
UL https://hdl.handle.net/20.500.14352/101302
LA eng
NO Blázquez-Salcedo, Jose Luis, et al. «Perturbed Black Holes in Einstein-Dilaton-Gauss-Bonnet Gravity: Stability, Ringdown, and Gravitational-Wave Emission». Physical Review D, vol. 94, n.o 10, noviembre de 2016, p. 104024. DOI.org (Crossref), https://doi.org/10.1103/PhysRevD.94.104024.
NO Unión Europea
NO Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
NO German Research Foundation
NO Government of Canada through Industry Canada
NO Province of Ontario through the Ministry of Economic Development and Innovation
NO Fundação para a Ciência e a Tecnologia (Portugal)
DS Docta Complutense
RD 18 abr 2025