Generalizations of the Schwarzschild and Kerr black holes are discussed in an astrophysically viable generalized theory of gravity, which includes higher curvature corrections in the form of the Gauss-Bonnet term, coupled to a dilaton. The angular momentum of these black holes can slightly exceed the Kerr bound. The location and the orbital frequency of particles in their innermost stable circular orbits can deviate significantly from the respective Kerr values. Study of the quasinormal modes of the static black holes gives strong evidence that they are mode stable against polar and axial perturbations. Future gravitational wave observations should improve the current bound on the Gauss-Bonnet coupling constant, based on observations of the low-mass x-ray binary A 0620-00.

Black holes in Einstein-Gauß-Bonnet-dilaton theory / Blázquez Salcedo, Jose Luis; Cardoso, Vitor; Ferrari, Valeria; Gualtieri, Leonardo; Kanti, Panagiota; Khoo, Fech Scen; Kleihaus, Burkhard; Kunz, Jutta; Macedo, Caio F. B.; Mojica, Sindy; Pani, Paolo; Radu, Eugen. - STAMPA. - 12:(2017), pp. 265-272. (Intervento presentato al convegno IAU Symposium 324 : New Frontiers in Black Hole Astrophysics. tenutosi a Ljubljana, Slovenia) [10.1017/S1743921316012965].

Black holes in Einstein-Gauß-Bonnet-dilaton theory

FERRARI, Valeria;GUALTIERI, Leonardo;PANI, PAOLO;
2017

Abstract

Generalizations of the Schwarzschild and Kerr black holes are discussed in an astrophysically viable generalized theory of gravity, which includes higher curvature corrections in the form of the Gauss-Bonnet term, coupled to a dilaton. The angular momentum of these black holes can slightly exceed the Kerr bound. The location and the orbital frequency of particles in their innermost stable circular orbits can deviate significantly from the respective Kerr values. Study of the quasinormal modes of the static black holes gives strong evidence that they are mode stable against polar and axial perturbations. Future gravitational wave observations should improve the current bound on the Gauss-Bonnet coupling constant, based on observations of the low-mass x-ray binary A 0620-00.
2017
IAU Symposium 324 : New Frontiers in Black Hole Astrophysics.
black holes; gamma ray bursts; tidal disruption events; active galactic nuclei; multi-messenger astronomy; gravitational waves; neutrinos; cosmic rays
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Black holes in Einstein-Gauß-Bonnet-dilaton theory / Blázquez Salcedo, Jose Luis; Cardoso, Vitor; Ferrari, Valeria; Gualtieri, Leonardo; Kanti, Panagiota; Khoo, Fech Scen; Kleihaus, Burkhard; Kunz, Jutta; Macedo, Caio F. B.; Mojica, Sindy; Pani, Paolo; Radu, Eugen. - STAMPA. - 12:(2017), pp. 265-272. (Intervento presentato al convegno IAU Symposium 324 : New Frontiers in Black Hole Astrophysics. tenutosi a Ljubljana, Slovenia) [10.1017/S1743921316012965].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/987327
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