80 citations · 220 across the 17 of their papers we have counts for
17 papers
Orbital precession and other properties of two-body motion in the presence of dark energy
Gennady S. Bisnovatyi-Kogan, Marco Merafina
We consider the Kepler two-body problem in the presence of a cosmological constant Lambda. Several dimensionless parameters characterizing the possible orbit typologies are used to…
Eliminating the Hubble Tension in the Presence of the Interconnection between Dark Energy and Matter in the Modern Universe
G. S. Bisnovatyi-Kogan, A. M. Nikishin
It is accepted in modern cosmology that the scalar field responsible for the inflationary stage of the early Universe is completely transformed into matter. It is assumed that the…
About the observational check of the mechanism of gamma radiation in Soft Gamma Repeaters (SGR)
G. S. Bisnovatyi-Kogan
Soft gamma repeaters (SGR) are identified as single neutron stars (NS) inside the Galaxy, or nearby galaxies, with sporadic transient gamma radiation. A total number of discovered…
Strong Shock in the Uniformly Expanding Universe with a Spherical Void
G. S. Bisnovatyi-Kogan, S. A. Panafidina
Propagation of strong shock wave in the expanding universe is studied using approximate analytic, and exact numerical solution of self-similar equations. Both solutions have simila…
Phenomenological model explaining Hubble Tension origin
G. S. Bisnovatyi-Kogan
One of the problem revealed recently in cosmology is a so-called Hubble tension (HT), which is the difference between values of the present Hubble constant, measured by observation…
Strong shock in a uniform expanding universe. Approximate and exact solutions of self-similar equations
Gennadiy S. Bisnovatyi-Kogan, Sofya A. Panafidina
Self-similar solution is obtained for propagation of a strong shock, in a flat expanding dusty Friedman universe. Approximate analytic solution was obtained earlier, using relation…