20 citations · 92 across the 11 of their papers we have counts for
11 papers
Time dilation observed in Type Ia supernova light curves and its cosmological consequences
Vaclav Vavrycuk
The cosmic time dilation observed in Type Ia supernova light curves suggests that the passage of cosmic time varies throughout the evolution of the Universe. This observation impli…
What is the amount of baryonic dark matter in galaxies?
Václav Vavryčuk
In this paper, we re-evaluate the estimates of dust mass in galaxies and demonstrate that current dust models are incomplete and based on a priori assumptions. These models suffer…
Gravitational orbits in the expanding universe revisited
Vaclav Vavrycuk
Modified Newtonian equations for gravitational orbits in the expanding universe indicate that local gravitationally bounded systems like galaxies and planetary systems are unaffect…
The failure of testing for cosmic opacity via the distance-duality relation
Vaclav Vavrycuk, Pavel Kroupa
The distance-duality relation (DDR) between the luminosity distance and the angular diameter distance is viewed as a powerful tool for testing for the opacity of the Un…
Considering light-matter interactions in the Friedmann equations
Václav Vavryčuk
Recent observations indicate that the Universe is not transparent but partially opaque due to absorption of light by ambient cosmic dust. This implies that the Friedmann equations…
Universe opacity and Type Ia supernova dimming
Vaclav Vavrycuk
In this paper, I revoke a debate about an origin of Type Ia supernova (SN Ia) dimming. I argue that except for a commonly accepted accelerating expansion of the Universe, a conceiv…