Graviton mass evaluation with trajectories of bright stars at the Galactic Center
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One could use trajectories of test particles to evaluate a gravitational potential. In particular, in the case of the Galactic Center one could use photon trajectories to analyze a shadow structure. Another way is to use bright stars near the Galactic Center to evaluate a gravitational potential and constrain parameters of a model for the Galactic Center. In particular, one could obtain constraints on parameters of black hole, stellar cluster and dark matter concentration. Earlier, we constrained parameters of Fr and a Yukawa potential from observational data for the S2 star trajectory. Now gravity theories with a massive graviton are a subject of intensive studies. People proposed different experimental ways to evaluate a graviton mass. Recently, the joint LIGO and VIRGO collaboration reported not only a discovery of gravitational waves and binary black holes, but the team claimed also that found a constraint on a graviton mass as 1.2 x 10(-22) eV. We show that an analysis of the S2 s...tar trajectory could constrain a graviton mass with a comparable accuracy and this constraint is consistent with LIGOs one.
Извор:Journal of Physics: Conference Series, 2017, 798
- Гравитација и структура космоса на великим скалама (RS-176003)
- NSF [HRD-1345219], NASA at NASA CCFASE [NNX09AV07A], CREST Centers (NCCU, Durham, NC, USA), ICTP - SEENET-MTP [PRJ-09]
- 2nd International Conference on Particle Physics and Astrophysics (ICPPA), Oct 11-14, 2016, Moscow, Russia
ISSN: 1742-6588 (print)