Gravitational waves in braneworlds after multi-messenger events
Abstract
The GW170817 event opened a new window to test modifications to General Relativity with the aim of discard or impose strong constraints in extra dimension theories of gravity. Concerning these theories, the Randall-Sundrum brane-world theory -- 4+1 spacetime model where its covariant Einstein field equations are composed with new extra terms that comes from extra dimensions -- is begin tested in the multi-messenger astronomy field. In the same context, the aim of this paper is to impose new constrictions through measurements of the time-delay between the gravitational and electromagnetic signals: GW170817 and the recent S190425z, over the free cosmological parameters of this modified model. We assume that Gravitational Waves travel along a shortcut on the extra dimension. In addition, we consider the standard CDM model and perform a likelihood analysis in order to study effects like the tension in comparison to this extra-dimensional theory, obtaining a reduced value of the order of in the low energy limit of this theory.
Cite
@article{arxiv.2001.08745,
title = {Gravitational waves in braneworlds after multi-messenger events},
author = {Miguel A. García-Aspeitia and Celia Escamilla-Rivera},
journal= {arXiv preprint arXiv:2001.08745},
year = {2020}
}
Comments
10 pages, 4 figures. Accepted for publication in EPJC