Constraints on Rn gravity from precession of orbits of S2-like stars: A case of a bulk distribution of mass

被引:43
作者
Zakharov, A. F. [1 ,2 ,3 ,4 ,5 ]
Borka, D. [6 ]
Jovanovic, V. Borka [6 ]
Jovanovic, P. [7 ]
机构
[1] Inst Theoret & Expt Phys, Moscow 117259, Russia
[2] JINR, Bogoliubov Lab Theoret Phys, Dubna 141980, Russia
[3] N Carolina Cent Univ, Durham, NC 27707 USA
[4] RAS, Inst Comp Aided Design, Moscow 123056, Russia
[5] Natl Res Nucl Univ NRNU MEPHI, Moscow 115409, Russia
[6] Univ Belgrade, Vinca Inst Nucl Sci, Atom Phys Lab 040, Belgrade 11001, Serbia
[7] Astron Observ, Belgrade 11060, Serbia
关键词
Black hole physics; Galactic Center; Astrometry; Alternative theories of gravity; SGR A-ASTERISK; DARK-MATTER; BLACK-HOLE; ENERGY;
D O I
10.1016/j.asr.2014.05.027
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
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 Newton's 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.
引用
收藏
页码:1108 / 1112
页数:5
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