Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2009-09-29
Open Astron.J.3: 167-171, 2010
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Latex2e, 13 pages, no figures, no tables, 56 references. Accepted in The Open Astronomy Journal (TOAJ)
Scientific paper
10.2174/1874381101003010167
We consider a spherically symmetric and asymptotically flat vacuum solution of the Horava-Lifshitz (HL) gravity that is the analog of the general relativistic Schwarzschild black hole. In the weak-field and slow-motion approximation, we work out the correction to the third Kepler law of a test particle induced by such a solution and compare it to the phenomenologically determined orbital period of the transiting extrasolar planet HD209458b Osiris to preliminarily obtain an order-of-magnitude lower bound on the KS dimensionless parameter \omega_0 >= 1.4\times 10^-18. As suggestions for further analyses, the entire data set of HD209458b should be re-processed by explicitly modeling KS gravity as well, and one or more dedicated solve-for parameter(s) should be estimated.
Iorio Lorenzo
Luca Ruggiero Matteo
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