Constraints on R-n gravity from precession of orbits of S2-like stars: A case of a bulk distribution of mass
Abstract
Here we investigate possible applications of observed stellar orbits around Galactic Center for constraining the R-n gravity at Galactic scales. For that purpose, we simulated orbits of S2-like stars around the massive black hole at Galactic Center, and study the constraints on the R-n gravity which could be obtained by the present and next generations of large telescopes. Our results show that R-n gravity affects the simulated orbits in the qualitatively similar way as a bulk distribution of matter (including a stellar cluster and dark matter distributions) in Newtons gravity. In the cases where the density of extended mass is higher, the maximum allowed value of parameter beta in R-n gravity is noticeably smaller, due to the fact that the both extended mass and R-n gravity cause the retrograde orbital precession. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.
Keywords:
Black hole physics / Galactic Center / Astrometry / Alternative theories of gravitySource:
Advances in Space Research, 2014, 54, 6, 1108-1112Funding / projects:
- Gravitation and the large scale structure of the Universe (RS-MESTD-Basic Research (BR or ON)-176003)
- NSF at NCCU (Durham, NC, USA) [HRD-0833184]
- NASA at NCCU (Durham, NC, USA) [NNX09AV07A]
- RFBR at ICAD of RAS (Moscow) [14-02-00754A]
Note:
- Preprint version: http://vinar.vin.bg.ac.rs/handle/123456789/8601
DOI: 10.1016/j.asr.2014.05.027
ISSN: 0273-1177
WoS: 000341340300021
Scopus: 2-s2.0-84905453885
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Institution/Community
VinčaTY - JOUR AU - Zakharov, Alexander F. AU - Borka, Duško AU - Borka Jovanović, Vesna AU - Jovanović, Predrag PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/96 AB - Here we investigate possible applications of observed stellar orbits around Galactic Center for constraining the R-n gravity at Galactic scales. For that purpose, we simulated orbits of S2-like stars around the massive black hole at Galactic Center, and study the constraints on the R-n gravity which could be obtained by the present and next generations of large telescopes. Our results show that R-n gravity affects the simulated orbits in the qualitatively similar way as a bulk distribution of matter (including a stellar cluster and dark matter distributions) in Newtons gravity. In the cases where the density of extended mass is higher, the maximum allowed value of parameter beta in R-n gravity is noticeably smaller, due to the fact that the both extended mass and R-n gravity cause the retrograde orbital precession. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved. T2 - Advances in Space Research T1 - Constraints on R-n gravity from precession of orbits of S2-like stars: A case of a bulk distribution of mass VL - 54 IS - 6 SP - 1108 EP - 1112 DO - 10.1016/j.asr.2014.05.027 ER -
@article{ author = "Zakharov, Alexander F. and Borka, Duško and Borka Jovanović, Vesna and Jovanović, Predrag", year = "2014", abstract = "Here we investigate possible applications of observed stellar orbits around Galactic Center for constraining the R-n gravity at Galactic scales. For that purpose, we simulated orbits of S2-like stars around the massive black hole at Galactic Center, and study the constraints on the R-n gravity which could be obtained by the present and next generations of large telescopes. Our results show that R-n gravity affects the simulated orbits in the qualitatively similar way as a bulk distribution of matter (including a stellar cluster and dark matter distributions) in Newtons gravity. In the cases where the density of extended mass is higher, the maximum allowed value of parameter beta in R-n gravity is noticeably smaller, due to the fact that the both extended mass and R-n gravity cause the retrograde orbital precession. (C) 2014 COSPAR. Published by Elsevier Ltd. All rights reserved.", journal = "Advances in Space Research", title = "Constraints on R-n gravity from precession of orbits of S2-like stars: A case of a bulk distribution of mass", volume = "54", number = "6", pages = "1108-1112", doi = "10.1016/j.asr.2014.05.027" }
Zakharov, A. F., Borka, D., Borka Jovanović, V.,& Jovanović, P.. (2014). Constraints on R-n gravity from precession of orbits of S2-like stars: A case of a bulk distribution of mass. in Advances in Space Research, 54(6), 1108-1112. https://doi.org/10.1016/j.asr.2014.05.027
Zakharov AF, Borka D, Borka Jovanović V, Jovanović P. Constraints on R-n gravity from precession of orbits of S2-like stars: A case of a bulk distribution of mass. in Advances in Space Research. 2014;54(6):1108-1112. doi:10.1016/j.asr.2014.05.027 .
Zakharov, Alexander F., Borka, Duško, Borka Jovanović, Vesna, Jovanović, Predrag, "Constraints on R-n gravity from precession of orbits of S2-like stars: A case of a bulk distribution of mass" in Advances in Space Research, 54, no. 6 (2014):1108-1112, https://doi.org/10.1016/j.asr.2014.05.027 . .