Results 11 to 20 of about 108,040 (211)

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

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

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

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

A low energy core-collapse supernova without a hydrogen envelope [PDF]

open access: yes, 2009
The final fate of massive stars depends on many factors, including mass, rotation rate, magnetic fields and metallicity. Theory suggests that some massive stars (initially greater than 25-30 solar masses) end up as Wolf-Rayet stars which are deficient in
A Filippenko   +43 more
core   +2 more sources

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

Simulations of magnetized multiphase galactic disk regulated by supernovae explosions [PDF]

open access: yes, 2014
What exactly controls star formation in the Galaxy remains controversial. In particular, the role of feedback and magnetic field are still partially understood.
Hennebelle, Patrick, Iffrig, Olivier
core   +5 more sources

Interstellar extinction from photometric surveys: application to four high-latitude areas

open access: yesOpen Astronomy, 2018
Information on interstellar extinction and dust properties may be obtained from modern large photometric surveys data. Virtual Observatory facilities allow users to make a fast and correct cross-identification of objects from various surveys. It yields a
Malkov Oleg   +13 more
doaj   +1 more source

High Energy Emission of Symbiotic Recurrent Novae: RS Oph and V407 Cyg

open access: yesOpen Astronomy, 2012
Recurrent novae occurring in symbiotic binaries are candidate sources of high energy photons, reaching GeV energies. Such emission is a consequence of particle acceleration leading to pion production.
Hernanz M., Tatischeff V.
doaj   +1 more source

Luminous Supernovae [PDF]

open access: yes, 2012
Supernovae (SNe), the luminous explosions of stars, were observed since antiquity, with typical peak luminosity not exceeding 1.2x10^{43} erg/s (absolute magnitude >-19.5 mag).
A. Gal-Yam   +8 more
core   +1 more source

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