TY  - JOUR
AU  - Borka Jovanović, Vesna
AU  - Jovanović, Predrag
AU  - Borka, Duško
AU  - Capozziello, Salvatore
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7781
AB  - The role of f(R) gravity, as well as the other modifications of standard Einstein’s gravity, is to explain the accelerated expansion, structure formation of the Universe, and some other phenomena at extragalactic scales (such as e.g. flat rotation curves of spiral galaxies) without adding unknown forms of dark energy or dark matter. In f(R) model, the Ricci scalar in the Einstein–Hilbert action is replaced by a general function of it. Its power-law form Rn is analyzed here using observed orbits of S-stars around the Galactic Center and also their computer simulations. We review the various consequences of the Rn gravity parameters (rc, the characteristic radius, i.e. the scalelength depending on the gravitating system properties; and β, the universal constant) on stellar dynamics and investigate their constraints from the observed S-star orbits. The presented results show that these observations could put reliable constraints on the parameters of Rn gravity.
T2  - Astronomical and Astrophysical Transactions
T1  - Rn gravity as a viable alternative to dark matter: Application to stellar dynamics
VL  - 30
IS  - 3
SP  - 351
EP  - 358
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7781
ER  - 

@article{
author = "Borka Jovanović, Vesna and Jovanović, Predrag and Borka, Duško and Capozziello, Salvatore",
year = "2018",
abstract = "The role of f(R) gravity, as well as the other modifications of standard Einstein’s gravity, is to explain the accelerated expansion, structure formation of the Universe, and some other phenomena at extragalactic scales (such as e.g. flat rotation curves of spiral galaxies) without adding unknown forms of dark energy or dark matter. In f(R) model, the Ricci scalar in the Einstein–Hilbert action is replaced by a general function of it. Its power-law form Rn is analyzed here using observed orbits of S-stars around the Galactic Center and also their computer simulations. We review the various consequences of the Rn gravity parameters (rc, the characteristic radius, i.e. the scalelength depending on the gravitating system properties; and β, the universal constant) on stellar dynamics and investigate their constraints from the observed S-star orbits. The presented results show that these observations could put reliable constraints on the parameters of Rn gravity.",
journal = "Astronomical and Astrophysical Transactions",
title = "Rn gravity as a viable alternative to dark matter: Application to stellar dynamics",
volume = "30",
number = "3",
pages = "351-358",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7781"
}

Borka Jovanović, V., Jovanović, P., Borka, D.,& Capozziello, S.. (2018). Rn gravity as a viable alternative to dark matter: Application to stellar dynamics. in Astronomical and Astrophysical Transactions, 30(3), 351-358.
https://hdl.handle.net/21.15107/rcub_vinar_7781

Borka Jovanović V, Jovanović P, Borka D, Capozziello S. Rn gravity as a viable alternative to dark matter: Application to stellar dynamics. in Astronomical and Astrophysical Transactions. 2018;30(3):351-358.
https://hdl.handle.net/21.15107/rcub_vinar_7781 .

Borka Jovanović, Vesna, Jovanović, Predrag, Borka, Duško, Capozziello, Salvatore, "Rn gravity as a viable alternative to dark matter: Application to stellar dynamics" in Astronomical and Astrophysical Transactions, 30, no. 3 (2018):351-358,
https://hdl.handle.net/21.15107/rcub_vinar_7781 .