2026-06-27T22:25:15Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/986572025-09-02T16:47:01Zcom_20.500.14352_14col_20.500.14352_15

Quasinormal modes of Einstein-Gauss-Bonnet-dilaton black holes Blázquez Salcedo, José Luis Khoo, Fech Scen Kunz, Jutta We study quasinormal modes of static Einstein-Gauss-Bonnet-dilaton black holes. Both axial and polar perturbations are considered and studied from l = 0 to l = 3. We emphasize the difference in the spectrum between the Schwarzschild solutions and dilatonic black holes. At large Gauss-Bonnet coupling constant, a small secondary branch of black holes is present, when the dilaton coupling is sufficiently strong. The modes of the primary branch can differ from the Schwarzschild modes up to 10%. The secondary branch is unstable and possesses long-lived modes. We address the possible effects of these modes on future observations of gravitational waves emitted during the ringdown phase of astrophysical black holes. 2024-02-05T08:57:41Z 2024-02-05T08:57:41Z 2024-02-05T08:57:41Z 2017 journal article https://hdl.handle.net/20.500.14352/98657 2470-0010 10.1103/PhysRevD.96.064008 2470-0029 eng info:eu-repo/grantAgreement/IRSES-606096 Blázquez-Salcedo, Jose Luis, et al. «Quasinormal Modes of Einstein-Gauss-Bonnet-Dilaton Black Holes». Physical Review D, vol. 96, n.o 6, septiembre de 2017, p. 064008. https://doi.org/10.1103/PhysRevD.96.064008. restricted access American Physical Society