Constraining the range of Yukawa gravity interaction from S2 star orbits II: bounds on graviton mass
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Recently LIGO collaboration discovered gravitational waves  predicted 100 years ago by A. Einstein. Moreover, in the key paper reporting about the discovery, the joint LIGO and VIRGO team presented an upper limit on graviton mass such as m(g) LT 1.2 x 10(-22)eV  (see also more details in another LIGO paper  dedicated to a data analysis to obtain such a small constraint on a graviton mass). Since the graviton mass limit is so small the authors concluded that their observational data do not show violations of classical general relativity. We consider another opportunity to evaluate a graviton mass from phenomenological consequences of massive gravity and show that an analysis of bright star trajectories could bound graviton mass with a comparable accuracy with accuracies reached with gravitational wave interferometers and expected with forthcoming pulsar timing observations for gravitational wave detection. It gives an opportunity to treat observations of bright stars near the G...alactic Center as a wonderful tool not only for an evaluation specific parameters of the black hole but also to obtain constraints on the fundamental gravity law such as a modifications of Newton gravity law in a weak field approximation. In particular, we obtain bounds on a graviton mass based on a potential reconstruction at the Galactic Center.
Keywords:gravity / modified gravity / GR black holes / gravitational waves / theory
Source:Journal of Cosmology and Astroparticle Physics, 2016, 5
- Gravitation and the large scale structure of the Universe (RS-176003)
- Chinese Academy of Sciences, NSF [HRD-0833184], NASA at NASA CADRE Center (NCCU, Durham, NC, U.S.A.) [NNX09AVO7A], NASA at NSF CREST Center (NCCU, Durham, NC, U.S.A.) [NNX09AVO7A]