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Supernovae and the Arrow of Time [PDF]

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   +2 more sources

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

A persistent influence of supernovae on biodiversity over the Phanerozoic [PDF]

open access: yesEcology and Evolution, 2023
It is an open question what has constrained macroevolutionary changes in marine animal diversity on the time scale of the Phanerozoic. Here, we will show that supernovae appear to have significantly influenced the biodiversity of life.
Henrik Svensmark
doaj   +2 more sources

Physical mechanism of core-collapse supernovae that neutrinos drive [PDF]

open access: yesProceedings of the Japan Academy. Series B, Physical and Biological Sciences
The current understanding of the mechanism of core-collapse supernovae (CCSNe), one of the most energetic events in the universe associated with the death of massive stars and the main formation channel of compact objects such as neutron stars and black ...
Shoichi YAMADA   +8 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

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

The Hubble Diagram: Jump from Supernovae to Gamma-ray Bursts

open access: yesUniverse, 2022
The Hubble diagram (HD) is a plot that contains a luminous distance modulus presented with respect to the redshift. The distance modulus–redshift relation of the most well-known “standard candles”, the type Ia supernovae (SN), is a crucial tool in ...
Nikita Yu. Lovyagin   +3 more
doaj   +1 more source

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