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Black holes in Einstein-Gauß-Bonnet-dilaton theory

Published online by Cambridge University Press:  23 June 2017

Jose Luis Blázquez-Salcedo Open the ORCID record for Jose Luis Blázquez-Salcedo [Opens in a new window] ,
Vitor Cardoso ,
Valeria Ferrari ,
Leonardo Gualtieri ,
Panagiota Kanti ,
Fech Scen Khoo ,
Burkhard Kleihaus ,
Jutta Kunz Open the ORCID record for Jutta Kunz [Opens in a new window] ,
Caio F. B. Macedo  and
Sindy Mojica
...Show all authors
Jose Luis Blázquez-Salcedo
Affiliation:
Institut für Physik, Universität Oldenburg, Postfach 2503, D-26111 Oldenburg, Germany
Vitor Cardoso
Affiliation:
CENTRA, Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa Avenida Rovisco Pais 1, 1049 Lisboa, Portugal
Valeria Ferrari
Affiliation:
Dipartimento di Fisica, “Sapienza” Università di Roma & Sezione INFN Roma1, Piazzale Aldo Moro 5, 00185 Roma, Italy
Leonardo Gualtieri
Affiliation:
Dipartimento di Fisica, “Sapienza” Università di Roma & Sezione INFN Roma1, Piazzale Aldo Moro 5, 00185 Roma, Italy
Panagiota Kanti
Affiliation:
Division of Theoretical Physics, Department of Physics, University of Ioannina Ioannina GR-45110, Greece
Fech Scen Khoo
Affiliation:
Department of Physics and Earth Sciences, Jacobs University, D-28759 Bremen, Germany
Burkhard Kleihaus
Affiliation:
Institut für Physik, Universität Oldenburg, Postfach 2503, D-26111 Oldenburg, Germany
Jutta Kunz
Affiliation:
Institut für Physik, Universität Oldenburg, Postfach 2503, D-26111 Oldenburg, Germany
Caio F. B. Macedo
Affiliation:
Faculdade de Física, Universidade Federal do Pará 66075-110 Belém, Pará, Brazil
Sindy Mojica
Affiliation:
Escuela de Física, Universidad Industrial de Santander A. A. 678, Bucaramanga 680002, Colombia
Paolo Pani
Affiliation:
Dipartimento di Fisica, “Sapienza” Università di Roma & Sezione INFN Roma1, Piazzale Aldo Moro 5, 00185 Roma, Italy
Eugen Radu
Affiliation:
Departamento de Física da Universidade de Aveiro and CIDMA, Campus de Santiago, 3810-183 Aveiro, Portugal
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Abstract

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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.

Keywords

Relativitygravitationblack hole physicsgravitational waves
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S324: New Frontiers in Black Hole Astrophysics , September 2016 , pp. 265 - 272
Copyright
Copyright © International Astronomical Union 2017 

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