Gravitational waves in braneworlds after multi-messenger events
Jan 23, 202010 pages
Published in:
- Eur.Phys.J.C 80 (2020) 4, 316
- Published: Apr 10, 2020
e-Print:
- 2001.08745 [gr-qc]
View in:
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Abstract: (Springer)
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.Note:
- 10 pages, 4 figures. Accepted for publication in EPJC
- space-time: model
- energy: low
- gravitation: higher-dimensional
- gravitational radiation
- membrane model
- statistical analysis
- Randall-Sundrum model
- cosmological model
- general relativity
- Einstein equation
References(40)
Figures(6)
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