Gravitational Radiation in Horava Gravity

Details Gravitational Radiation in Horava Gravity Gravitational Radiation in Horava Gravity

2011-05-25

arxiv.org/abs/1105.5149v3

Phys.Rev.D84:064004,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

30 pages, no figures. v2: Comparison with scalar-tensor improved, typos corrected, 1 ref. updated. v3: Matches published versi

Scientific paper

10.1103/PhysRevD.84.064004

We study the radiation of gravitational waves by self-gravitating binary systems in the low-energy limit of Horava gravity. We find that the predictions for the energy-loss formula of General Relativity are modified already for Newtonian sources: the quadrupole contribution is altered, in part due to the different speed of propagation of the tensor modes; furthermore, there is a monopole contribution stemming from an extra scalar degree of freedom. A dipole contribution only appears at higher post-Newtonian order. We use these findings to constrain the low-energy action of Horava gravity by comparing them with the radiation damping observed for binary pulsars. Even if this comparison is not completely appropriate - since compact objects cannot be described within the post-Newtonian approximation - it represents an order of magnitude estimate. In the limit where the post-Newtonian metric coincides with that of General Relativity, our energy-loss formula provides the strongest constraints for Horava gravity at low-energies.

Affiliated with

Also associated with

No associations

Rating

Gravitational Radiation in Horava Gravity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gravitational Radiation in Horava Gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravitational Radiation in Horava Gravity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-216743