166 citations · 1.3k across the 57 of their papers we have counts for
59 papers
SNe Ia in Standard and Conformal Cosmological Models
A. B. Arbuzov, V. Shmidt, A. F. Zakharov
This article demonstrates the classical equivalence between standard and conformal cosmological models regarding the apparent luminosity of type Ia supernovae. We show that previou…
Shadows near supermassive black holes: from a theoretical concept to GR test
Alexander F. Zakharov
General relativity (GR) passed many astronomical tests but in majority of them GR predictions have been tested in a weak gravitational field approximation. Around 50 years ago a sh…
Constraints on black hole charges in M87* and Sgr A* with the EHT observations
Alexander F. Zakharov
In May 2022 ICRANet organized the Workshop dedicated to the 80th anniversary of Professor Ruffini. This paper is based on the talk delivered at the meeting. Professor Ruffini was w…
Improvement of graviton mass constraints using GRAVITY's detection of Schwarzschild precession in the orbit of S2 star around the Galactic Center
Predrag Jovanović, Vesna Borka Jovanović, Duško Borka +1
Here we study possible improvements of the existing constraints on the upper bound of graviton mass by the analysis of the stellar orbits around the SMBH at the GC in the framework…
Shadows around Sgr A* and M87* as a tool to test gravity theories
Alexander F. Zakharov
In the framework of Randall -- Sundrum theory with extra dimension Reissner -- Nordström black hole solutions with a tidal charge have been found. The shadow around the supermassiv…
Estimating the Parameters of Extended Gravity Theories with the Schwarzschild Precession of S2 Star
D. Borka, V. Borka Jovanović, S. Capozziello +2
After giving a short overview of previous results on constraining of Extended Gravity (EG) by stellar orbits, we discuss the Schwarzschild orbital precession of S2 star assuming th…