Results 1 to 10 of about 21,733 (235)

Two Dynamical Scenarios for Binned Master Sample Interpretation [PDF]

open access: yesEntropy
We analyze two different scenarios for the late universe dynamics, resulting in Hubble parameters deviating from the ΛCDM, mainly for the presence of an additional free parameter, which is the dark energy parameter.
Giovanni Montani   +3 more
doaj   +2 more sources

Can local inhomogeneity of the Universe explain the accelerating expansion?

open access: yesOpen Astronomy, 2022
This paper discusses the disordering of the principle of cosmology on a small scale, i.e. the possibility of interpreting the observational data of type Ia Supernovae (SNe Ia) through the inhomogeneity and anisotropy of the Universe. The expansion of the
Turaev Sobir, Nuritdinov Salakhutdin
doaj   +1 more source

First Observations of SN 1604 (Kepler’s Supernova)

open access: yesUniverse, 2021
A supernova close enough to the Earth is a spectacular event: it can appear as a “new star” as luminous as Venus, or even more, visible for several days.
Alessandro de Angelis, Selenia Broccio
doaj   +1 more source

Supernovae and the Arrow of Time

open access: yesEntropy, 2022
Supernovae are explosions of stars and are a central problem in astrophysics. Rayleigh–Taylor (RT) and Richtmyer–Meshkov (RM) instabilities develop during the star’s explosion and lead to intense interfacial RT/RM mixing of the star materials.
Snezhana I. Abarzhi   +4 more
doaj   +1 more source

Effect of Protoneutron Star Magnetized Envelops in Neutrino Energy Spectra

open access: yesParticles, 2022
The neutrino dynamics in hot and dense magnetized matter, which corresponds with protoneutron star envelopes in the core collapse supernova explosions, is considered.
Vladimir N. Kondratyev   +2 more
doaj   +1 more source

Black Holes as Evidence of God’s Care

open access: yesReligions, 2021
As black holes gravitationally draw matter toward their event horizons, a high proportion of this matter is converted into energy. Radiation from this conversion process is deadly for advanced life.
Hugh Ross
doaj   +1 more source

On the Evolution of the Hubble Constant with the SNe Ia Pantheon Sample and Baryon Acoustic Oscillations: A Feasibility Study for GRB-Cosmology in 2030

open access: yesGalaxies, 2022
The difference from 4 to 6 σ in the Hubble constant (H0) between the values observed with the local (Cepheids and Supernovae Ia, SNe Ia) and the high-z probes (Cosmic Microwave Background obtained by the Planck data) still challenges the astrophysics and
Maria Giovanna Dainotti   +7 more
doaj   +1 more source

On the Cosmological Transformation of Light: A Gravitational Analogue of the Photoelectric Effect

open access: yesReports in Advances of Physical Sciences, 2022
It is known that very distant galaxies, much like our own, show remarkably high receding velocities, the magnitude of which increases with distance.
L. Nash
doaj   +1 more source

Mathematical simulation of vortex motion in the astrophysical objects on the basis of the gas-dynamic model [PDF]

open access: yesКомпьютерные исследования и моделирование, 2018
The application of a conservative numerical method of fluxes is examined for studying the vortex structures in the massive, fast-turned compact astrophysical objects, which are in self-gravity conditions.
Alexander Vladimirovich Babakov   +1 more
doaj   +1 more source

Supernovae and transients with circumstellar interaction [PDF]

open access: yesRoyal Society Open Science, 2020
It is 30 years since the characteristic signatures of interaction with circumstellar material (CSM) were first observed in a core-collapse supernova. Since then, CSM interaction has been observed and inferred across a range of transients, from the low ...
Morgan Fraser
doaj   +1 more source

Home - About - Disclaimer - Privacy