Modified gravitational wave (GW) propagation is a generic phenomenon in modified gravity. It affects the reconstruction of the redshift of coalescing binaries from the luminosity distance measured by GW detectors, and therefore the reconstruction of the actual masses of the component compact stars from the observed (‘detector-frame’) masses. We show that, thanks to the narrowness of the mass distribution of binary neutron stars, this effect can provide a clear signature of modified gravity, particularly for the redshifts explored by third generation GW detectors such as Einstein Telescope and Cosmic Explorer.
Finke, A., Foffa, S., Iacovelli, F., Maggiore, M., Mancarella, M. (2022). Modified gravitational wave propagation and the binary neutron star mass function. PHYSICS OF THE DARK UNIVERSE, 36(June 2022) [10.1016/j.dark.2022.100994].
Modified gravitational wave propagation and the binary neutron star mass function
Mancarella M.
2022
Abstract
Modified gravitational wave (GW) propagation is a generic phenomenon in modified gravity. It affects the reconstruction of the redshift of coalescing binaries from the luminosity distance measured by GW detectors, and therefore the reconstruction of the actual masses of the component compact stars from the observed (‘detector-frame’) masses. We show that, thanks to the narrowness of the mass distribution of binary neutron stars, this effect can provide a clear signature of modified gravity, particularly for the redshifts explored by third generation GW detectors such as Einstein Telescope and Cosmic Explorer.
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