Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 510, Issue 4, Pages 4757-4766Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stab3727
Keywords
gravitation; stars: kinematics and dynamics; Galaxy: centre; dark matter
Categories
Funding
- Consejeria de Educacion de la Junta de Castilla y Leon
- Fondo Social Europeo
- MCIN/AEI [Ayuda IJCI2018-036198-I]
- FSE El FSE invierte en tu futuro o Financiado por la Union Europea NextGenerationEU/PRTR
- Spanish Ministerio de Ciencia e Innovacion [PGC2018096038-B-I00]
- FEDER A way of making Europe
- Junta de Castilla y Leon [SA096P20]
Ask authors/readers for more resources
In this study, the parameter space of Scalar-Tensor-Vector Gravity is constrained using the motion of the S2-star. No serious tension with General Relativity is found.
We have obtained the first constraint of the parameter space of Scalar-Tensor-Vector Gravity using the motion of the S2-star around the supermassive black hole at the centre of the Milky Way, and we did not find any serious tension with General Relativity. We used the Schwarzschild-like metric of Scalar-Tensor-Vector Gravity to predict the orbital motion of S2-star, and to compare it with the publicly available astrometric data, which include 145 measurements of the positions, 44 measurements of the radial velocities of S2-star along its orbit, and only the inferred rate of precession, as the latest GRAVITY data are not yet public. We employed a Markov chain Monte Carlo algorithm to explore the parameter space, and constrained the only one additional parameter of Scalar-Tensor-Vector Gravity to alpha less than or similar to 0.662 at 99.7 per cent confidence level, where alpha = 0 reduces this modified theory of gravity to General Relativity.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available