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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

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

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

Constraining High-energy Neutrino Emission from Supernovae with IceCube

open access: yesThe Astrophysical Journal Letters, 2023
Core-collapse supernovae are a promising potential high-energy neutrino source class. We test for correlation between seven years of IceCube neutrino data and a catalog containing more than 1000 core-collapse supernovae of types IIn and IIP and a sample ...
R. Abbasi   +393 more
doaj   +1 more source

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

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

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

Neutrino Flavor Conversions in High-Density Astrophysical and Cosmological Environments

open access: yesUniverse, 2022
Despite being a well understood phenomenon in the context of current terrestrial experiments, neutrino flavor conversions in dense astrophysical environments probably represent one of the most challenging open problems in neutrino physics.
Francesco Capozzi, Ninetta Saviano
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

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