TY  - JOUR
AU  - Borka, Duško
AU  - Borka Jovanović, Vesna
AU  - Capozziello, Salvatore
AU  - Jovanović, Predrag
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10420
AB  - We investigate the velocity distribution of elliptical galaxies in the framework of Non-local Gravity. According to this approach, it is possible to recover the fundamental plane of elliptical galaxies without the dark matter hypothesis. Specifically, we compare theoretical predictions for circular velocity in Non-local Gravity context with the corresponding values coming from a large sample of observed elliptical galaxies. We adopt the surface brightness, effective radius and velocity dispersion as structural parameters for the fundamental plane. As final result, it is possible to show that non-local gravity effects can reproduce the stellar dynamics in elliptical galaxies and fit consistently observational data.
T2  - Advances in Space Research
T1  - Velocity distribution of elliptical galaxies in the framework of Non-local Gravity model
VL  - 71
IS  - 2
SP  - 1235
EP  - 1244
DO  - 10.1016/j.asr.2022.08.060
ER  - 

@article{
author = "Borka, Duško and Borka Jovanović, Vesna and Capozziello, Salvatore and Jovanović, Predrag",
year = "2022",
abstract = "We investigate the velocity distribution of elliptical galaxies in the framework of Non-local Gravity. According to this approach, it is possible to recover the fundamental plane of elliptical galaxies without the dark matter hypothesis. Specifically, we compare theoretical predictions for circular velocity in Non-local Gravity context with the corresponding values coming from a large sample of observed elliptical galaxies. We adopt the surface brightness, effective radius and velocity dispersion as structural parameters for the fundamental plane. As final result, it is possible to show that non-local gravity effects can reproduce the stellar dynamics in elliptical galaxies and fit consistently observational data.",
journal = "Advances in Space Research",
title = "Velocity distribution of elliptical galaxies in the framework of Non-local Gravity model",
volume = "71",
number = "2",
pages = "1235-1244",
doi = "10.1016/j.asr.2022.08.060"
}

Borka, D., Borka Jovanović, V., Capozziello, S.,& Jovanović, P.. (2022). Velocity distribution of elliptical galaxies in the framework of Non-local Gravity model. in Advances in Space Research, 71(2), 1235-1244.
https://doi.org/10.1016/j.asr.2022.08.060

Borka D, Borka Jovanović V, Capozziello S, Jovanović P. Velocity distribution of elliptical galaxies in the framework of Non-local Gravity model. in Advances in Space Research. 2022;71(2):1235-1244.
doi:10.1016/j.asr.2022.08.060 .

Borka, Duško, Borka Jovanović, Vesna, Capozziello, Salvatore, Jovanović, Predrag, "Velocity distribution of elliptical galaxies in the framework of Non-local Gravity model" in Advances in Space Research, 71, no. 2 (2022):1235-1244,
https://doi.org/10.1016/j.asr.2022.08.060 . .

TY  - JOUR
AU  - Borka, Duško
AU  - Borka Jovanović, Vesna
AU  - Jovanović, Predrag
AU  - Capozziello, Salvatore
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11897
AB  - We investigate the possibility to explain theoretically the S2 star orbital precession around the massive object at Galactic Centre using Extended Theories of Gravity, specifically f(R, φ) a Sanders-like gravitational potential in total absence of dark matter. To this aim an analytic fourth-order theory of gravity, non-minimally coupled with a massive scalar field is considered. The interaction term is given by an analytic functions f(R, φ) where R is the Ricci scalar and φ is the scalar field. We simulated orbit of S2 star around Galactic Centre in Sanders-like gravity potentials and compared it with NTT/VLT observations. We presented maps of reduced χ 2 over the {α − mφ} parameter space in the case of NTT/VLT observations. The approach we are proposing seems reliable to constrain modified gravity models at astronomical level.
T2  - Publications of the Astronomical Observatory of Belgrade
T1  - Constraints on f(R, ɸ) (Sanders-Like) Gravity Potential From Orbit of S2 Star
IS  - 96
SP  - 205
EP  - 210
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11897
ER  - 

@article{
author = "Borka, Duško and Borka Jovanović, Vesna and Jovanović, Predrag and Capozziello, Salvatore",
year = "2017",
abstract = "We investigate the possibility to explain theoretically the S2 star orbital precession around the massive object at Galactic Centre using Extended Theories of Gravity, specifically f(R, φ) a Sanders-like gravitational potential in total absence of dark matter. To this aim an analytic fourth-order theory of gravity, non-minimally coupled with a massive scalar field is considered. The interaction term is given by an analytic functions f(R, φ) where R is the Ricci scalar and φ is the scalar field. We simulated orbit of S2 star around Galactic Centre in Sanders-like gravity potentials and compared it with NTT/VLT observations. We presented maps of reduced χ 2 over the {α − mφ} parameter space in the case of NTT/VLT observations. The approach we are proposing seems reliable to constrain modified gravity models at astronomical level.",
journal = "Publications of the Astronomical Observatory of Belgrade",
title = "Constraints on f(R, ɸ) (Sanders-Like) Gravity Potential From Orbit of S2 Star",
number = "96",
pages = "205-210",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11897"
}

Borka, D., Borka Jovanović, V., Jovanović, P.,& Capozziello, S.. (2017). Constraints on f(R, ɸ) (Sanders-Like) Gravity Potential From Orbit of S2 Star. in Publications of the Astronomical Observatory of Belgrade(96), 205-210.
https://hdl.handle.net/21.15107/rcub_vinar_11897

Borka D, Borka Jovanović V, Jovanović P, Capozziello S. Constraints on f(R, ɸ) (Sanders-Like) Gravity Potential From Orbit of S2 Star. in Publications of the Astronomical Observatory of Belgrade. 2017;(96):205-210.
https://hdl.handle.net/21.15107/rcub_vinar_11897 .

Borka, Duško, Borka Jovanović, Vesna, Jovanović, Predrag, Capozziello, Salvatore, "Constraints on f(R, ɸ) (Sanders-Like) Gravity Potential From Orbit of S2 Star" in Publications of the Astronomical Observatory of Belgrade, no. 96 (2017):205-210,
https://hdl.handle.net/21.15107/rcub_vinar_11897 .