[1212.5053] Neutron-star mergers in scalar-tensor theories of gravity

Authors: Enrico Barausse, Carlos Palenzuela, Marcelo Ponce, Luis Lehner

Date: 20 Dec 2012

Abstract: Scalar-tensor theories of gravity are among the most natural phenomenological alternatives to General Relativity, because the gravitational interaction is mediated by a scalar degree of freedom, besides the gravitons. In regions of the parameter space of these theories where constraints from both solar system experiments and binary-pulsar observations are satisfied, we show that binaries of neutron stars present marked differences from General Relativity in both the late-inspiral and merger phases. These strong-field effects are difficult to reproduce in General Relativity, even with an exotic equation of state. We comment on the relevance of our results for the upcoming Advanced LIGO/Virgo detectors.

abs pdf

Dec 21, 2012

1212.5053 (/preprints)
2012-12-21, 13:03 [edit]

  Login:   Password:   [rss] [cc] [w3] [css]

© M. Vallisneri 2012 — last modified on 2010/01/29

Tantum in modicis, quantum in maximis