Bounding Alternative Theories of Gravity with Multi-Band GW Observations
Abstract
We study the constraints on alternative theories of gravity that can be determined by multi-band observations of gravitational wave signals emitted from binary black hole coalescences. We focus on three types of General Relativity modifications induced by a generalised Brans-Dicke theory, and two classes of quadratic gravity, Einstein-dilaton-Gauss-Bonnet and dynamical Chern-Simons. Considering a network of space and ground-based detectors, supplied by a population of spinning binaries black hole, we show how the multi-band analysis improves the existing bounds on the theory's parameters by several orders of magnitude, for both pre- and post-Newtonian deviations. Our results also show the fundamental role played by an interferometer in the frequency range between LISA and advanced detectors, in constraining possible deviations from General Relativity.
Keywords
Cite
@article{arxiv.1905.13460,
title = {Bounding Alternative Theories of Gravity with Multi-Band GW Observations},
author = {Giuseppe Gnocchi and Andrea Maselli and Tiziano Abdelsalhin and Nicola Giacobbo and Michela Mapelli},
journal= {arXiv preprint arXiv:1905.13460},
year = {2019}
}
Comments
Results updated to match the version in press on Phys. Rev. D