Horava-Lifshitz gravity: tighter constraints for the Kehagias-Sfetsos solution from new solar system data
arXiv:1012.2822 · doi:10.1142/S0218271811019281
Abstract
We analytically work out the perturbation induced by the Kehagias-Sfetsos (KS) space-time solution of the Horava-Lifshitz (HL) modified gravity at long distances on the two-body range for a pair of test particles A and B orbiting the same mass M. We apply our results to the most recently obtained range-residuals δρfor some planets of the solar system (Mercury, Mars, Saturn) ranged from the Earth to effectively constrain the dimensionsless KS parameter ψ_0 for the Sun. We obtain ψ_0 >= 7.2 x 10^-10 (Mercury), ψ_0 >= 9 x 10^-12 (Mars), ψ_0 >= 1.7 x 10^-12 (Saturn). Such lower bounds are tighter than other ones existing in literature by several orders of magnitude. We also preliminarily obtain ψ_0 >= 8 x 10^-10 for the system constituted by the S2 star orbiting the Supermassive Black Hole (SBH) in the center of the Galaxy.
LaTex2e, 15 pages, 1 table, 3 figures, 31 references. Version matching the one at press in International Journal of Modern Physics D (IJMPD)
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- Particle motion in Horava-Lifshitz black hole space-times
- Accreting Fluids onto Regular Black Holes Via Hamiltonian Approach
- Solar system tests and interpretation of gauge field and Newtonian prepotential in general covariant Hořava-Lifshitz gravity
- Perfect fluid tori orbiting Kehagias-Sfetsos naked singularities
- Gravitational lensing around Kehagias-Sfetsos compact objects surrounded by plasma
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- Spiral galaxies rotation curves in the Horava - Lifshitz gravity theory
- Quantum Probe of Hořava-Lifshitz Gravity
- Self-gravitational Interaction in z = 4 Horava-Lifshitz Gravity
- Spherically symmetric solutions, Newton's Law and IR limit λ->1, in Covariant Horava Lifshitz Gravity
- Curvature Late-Time Acceleration in an Eternal Universe
- Vanishing Compactness Gap and Fermionic Compact Dark Matter in Hořava-Lifshitz Gravity