Gravitational radiation from compact binary systems in the massive Brans-Dicke theory of gravity
By Justin Alsing, Emanuele Berti, C. Will, Helmut W. Zaglauer. 2011
165 citations recorded by the source corpus.
We derive the equations of motion, the periastron shift, and the gravitational radiation damping for quasicircular compact binaries in a massive variant of the Brans-Dicke theory of gravity. We also study the Shapiro time delay and the Nordtvedt effect in this theory. By comparing with recent observational data, we put bounds on the two parameters of the theory: the Brans-Dicke coupling parameter \omega_{BD} and the scalar mass m_s. We find that the most stringent bounds come from Cassini measurements of the Shapiro time delay in the Solar System, that yield a lower bound \omega_{BD}>40000 for scalar masses m_s 1000 for m_s 1250 for m_s<10^{-20} eV. A first estimate suggests that bounds comparable to the Shapiro time delay may come from observations of radiation damping in the eccentric white dwarf-neutron star binary PSR J1141-6545, but a quantitative prediction requires the extension of our work to eccentric orbits.
Subfields: Astronomy and Astrophysics, Oceanography
View Paper: https://www.semanticscholar.org/paper/ca7d7d741b65b2fa699037b66430bd4534b18475
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In Astronomy and Astrophysics
- Paolo Pani
- V. Cardoso
- R. Brito
- Emanuele Berti
- M. Volonteri
- Bernard F. Schutz
- A. Sesana
- Jonathan R. Gair
In Oceanography
Citations in the corpus
- Doing Science with eLISA: Astrophysics and Cosmology in the Millihertz Regime (2012, background): “…from GR are parametrized by a set of global parameters: examples considered so far in the literature include theories with an evolving gravitational constant (Yunes et al., 2010), massive Brans-Dicke theories (Alsing et al., 2011) and Lorentz-violating modifications of GR (Mirshekari et al., 2011).”
- Superradiance: Energy Extraction, Black-Hole Bombs and Implications for Astrophysics and Particle Physics (2015, background): “orbits manifests itself in a sizeable and detectable dephasing of gravitational waves, with respect to pure GR waveforms [98, 493, 494, 248].”
- Superradiance (2015, background): “The existence of floating orbits manifests itself in a sizeable and detectable dephasing of GWs, with respect to pure GR waveforms [104, 533, 534, 315, 535].”