Testing Hořava-Lifshitz gravity using thin accretion disk properties

Details Testing Hořava-Lifshitz gravity using thin accretion disk properties Testing Hořava-Lifshitz gravity using thin accretion disk properties

2009-07-09

arxiv.org/abs/0907.1449v2

Phys.Rev.D80:044021,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, 4 figures. V2: minor additions and references added; to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.80.044021

Recently, a renormalizable gravity theory with higher spatial derivatives in four dimensions was proposed by Horava. The theory reduces to Einstein gravity with a non-vanishing cosmological constant in IR, but it has improved UV behaviors. The spherically symmetric black hole solutions for an arbitrary cosmological constant, which represent the generalization of the standard Schwarzschild-(A)dS solution, has also been obtained for the Horava-Lifshitz theory. The exact asymptotically flat Schwarzschild type solution of the gravitational field equations in Horava gravity contains a quadratic increasing term, as well as the square root of a fourth order polynomial in the radial coordinate, and it depends on one arbitrary integration constant. The IR modified Horava gravity seems to be consistent with the current observational data, but in order to test its viability more observational constraints are necessary. In the present paper we consider the possibility of observationally testing Horava gravity by using the accretion disk properties around black holes. The energy flux, temperature distribution, the emission spectrum as well as the energy conversion efficiency are obtained, and compared to the standard general relativistic case. Particular signatures can appear in the electromagnetic spectrum, thus leading to the possibility of directly testing Horava gravity models by using astrophysical observations of the emission spectra from accretion disks.

Affiliated with

Also associated with

No associations

Rating

Testing Hořava-Lifshitz gravity using thin accretion disk properties 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 Testing Hořava-Lifshitz gravity using thin accretion disk properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing Hořava-Lifshitz gravity using thin accretion disk properties will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-341166