http://arxiv.org/abs/1710.01357
Cosmological observations over past couple of decades favor our universe with a tiny positive cosmological constant. Presence of cosmological constant not only imposes theoretical challenges in gravitational waves physics, it has also observational relevance. Inclusion of cosmological constant in linearized theory of gravitational waves modifies the power radiated quadrupole formula. There are two types of observations which can be impacted by the modified quadrupole formula. One is the orbital decay of an inspiraling binary and other is the modification of the waveform at the detector. Modelling a compact binary system in an elliptic orbit on de Sitter background we obtain quadrupolar power radiation and we also investigate its impact on orbital decay rate.
S. Hoque and A. Aggarwal
Thu, 5 Oct 17
11/65
Comments: 19 pages, 3 figures