85 citations · 251 across the 11 of their papers we have counts for
11 papers
A way to constrain a graviton mass from astronomical observations
Alexander F. Zakharov, Predrag Jovanovic, Dusko Borka +1
Along with a whole range of alternative theories of gravity, variants of the massive theory of gravity, i.e. the theory of gravity, in which the graviton has mass, have been active…
The comparison of an optical and X-ray counterpart of subparsec supermassive binary black holes
P. Jovanović, S. Simić, V. Borka Jovanović +2
In this paper, we study and compare the optical and X-ray counterparts of subparsec supermassive black hole binaries (SMBHBs). With that aim, we simulated the profiles of optical s…
Constraints on graviton mass from Schwarzschild precession in the orbits of S-stars around the Galactic Center
Predrag Jovanović, Vesna Borka Jovanović, Duško Borka +1
In this paper we use a modification of the Newtonian gravitational potential with a non-linear Yukawa-like correction, as it was proposed by C. Will earlier to obtain new bounds on…
Constraints on Yukawa gravity parameters from observations of bright stars
P. Jovanović, V. Borka Jovanović, D. Borka +1
In this paper we investigate a Yukawa gravity modification of the Newtonian gravitational potential in a weak field approximation. For that purpose we derived the corresponding equ…
Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format
V. Borka Jovanović, D. Borka, A. Arsenić +1
The goal of this paper is to investigate the flux and spectral index distribution of FR II radio galaxy 4C 14.11. We focused on the distribution of flux and spectral indices over t…
Possible observational signatures of SMBHBs in their Fe K line profiles
P. Jovanović, V. Borka Jovanović, D. Borka +1
Here we study the potential observational signatures of supermassive black hole binaries (SMBHBs) in the Fe K line profiles emitted from the accretion disks around their compone…
Different ways to estimate graviton mass
Alexander F. Zakharov, Predrag Jovanovic, Dusko Borka +1
An experimental detection of graviton is extremely hard problem, however, there are different ways to evaluate a graviton mass if it is non-vanishing. Theories of massive gravity o…
Constraining the range of Yukawa gravity interaction from S2 star orbits II: Bounds on graviton mass
Alexander F. Zakharov, Predrag Jovanovic, Dusko Borka +1
Recently LIGO collaboration discovered gravitational waves \cite{Abbott_16} predicted 100 years ago by A. Einstein. Moreover, in the key paper reporting about the discovery, the jo…
Line shifts in accretion disks - the case of Fe K
P. Jovanović, V. Borka Jovanović, D. Borka +1
Here we present a short overview and main results of our investigations of several effects which can induce shifts in the broad Fe K line emitted from relativistic accretion dis…
Constraints on gravity from precession of orbits of S2-like stars: a case of a bulk distribution of mass
Alexander F. Zakharov, Dusko Borka, Vesna Borka Jovanović +1
Here we investigate possible applications of observed stellar orbits around Galactic Center for constraining the R gravity at Galactic scales. For that purpose, we simulated or…
Constraining the range of Yukawa gravity interaction from S2 star orbits
D. Borka, P. Jovanović, V. Borka Jovanović +1
We consider possible signatures for Yukawa gravity within the Galactic Central Parsec, based on our analysis of the S2 star orbital precession around the massive compact dark objec…