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Axial quasinormal modes of Einstein-Gauss-Bonnet-dilaton neutron stars

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Blázquez Salcedo, José Luis and González Romero, Luis Manuel and Kunz, Jutta and Mojica, Sindy and Navarro Lérida, Francisco (2016) Axial quasinormal modes of Einstein-Gauss-Bonnet-dilaton neutron stars. Physical review D, 93 (2). ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.93.024052


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Abstract

We investigate axial quasinormal modes of realistic neutron stars in Einstein-Gauss-Bonnet-dilaton gravity. We consider eight realistic equations of state containing nuclear, hyperonic, and hybrid matter. We focus on the fundamental curvature mode and compare the results with those of pure Einstein theory. We observe that the frequency of the modes is increased by the presence of the Gauss-Bonnet-dilaton, while the impact on the damping time is typically smaller. Interestingly, we obtain that universal relations valid in pure Einstein theory still hold for Einstein-Gauss-Bonnet-dilaton gravity, and we propose a method to use these phenomenological relations to constrain the value of the Gauss-Bonnet coupling.


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© 2016 American Physical Society.
J. L. B. S., J. K. and S. M. gratefully acknowledge support by the DFG Research Training Group 1620 Models of Gravity, as well as support from FP7, Marie Curie Actions, People, International Research Staff Exchange Scheme (IRSES-606096). J. L. B. S., L. M. G. R., J. K. and F. N. L. gratefully acknowledge support from MINECO, under research Project No. FIS2011-28013.

Uncontrolled Keywords:Equation of state; Black holes; General Relativity; W-modes; Matter; Stability.
Subjects:Sciences > Physics > Nuclear physics
ID Code:37284
Deposited On:26 Apr 2016 16:37
Last Modified:10 Dec 2018 14:57

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