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- Title
Constraining MOdified Gravity with the S2 Star.
- Authors
Della Monica, Riccardo; de Martino, Ivan; de Laurentis, Mariafelicia
- Abstract
We have used publicly available kinematic data for the S2 star to constrain the parameter space of MOdified Gravity. Integrating geodesics and using a Markov Chain Monte Carlo algorithm, we have provided the first constraint on the scales of the Galactic Centre for the parameter α of the theory, which represents the fractional increment of the gravitational constant G with respect to its Newtonian value. Namely, α ≲ 0.662 at 99.7% confidence level (where α = 0 reduces the theory to General Relativity).
- Subjects
GENERAL relativity (Physics); GRAVITATIONAL constant; MARKOV chain Monte Carlo; GEODESICS; BLACK holes
- Publication
Universe (2218-1997), 2022, Vol 8, Issue 2, pN.PAG
- ISSN
2218-1997
- Publication type
Article
- DOI
10.3390/universe8020137