Results 11 to 20 of about 29,237 (225)

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

The Supernova – Supernova Remnant Connection [PDF]

open access: yes, 2016
Many aspects of the progenitor systems, environments, and explosion dynamics of the various subtypes of supernovae are difficult to investigate at extragalactic distances where they are observed as unresolved sources. Alternatively, young supernova remnants in our own galaxy and in the Large and Small Magellanic Clouds offer opportunities to resolve ...
Milisavljevic, Dan, Fesen, Robert A.
openaire   +2 more sources

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

SUPERNOVAE [PDF]

open access: yesExperimental Physics of Gravitational Waves, 2000
12 pages, 2 figures - Invited Lecture at the International Summer School "Experimental Physics of Gravitational Waves", Urbino (Italy), 6-19 September, 1999, eds. G. Calamai, M. Mazzoni, R. Stanga & F.
openaire   +2 more sources

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

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