Results 21 to 30 of about 6,954,829 (204)

Mass Ejection in Failed Supernovae: Equation of State and Neutrino Loss Dependence [PDF]

open access: yesAstrophysical Journal, 2021
A failed core-collapse supernova from a nonrotating progenitor can eject mass due to a weakening of gravity associated with neutrino emission from the protoneutron star.
M. Ivanov, R. Fernández
semanticscholar   +1 more source

GENERALIZED SEMI-ANALYTICAL MODELS OF SUPERNOVA LIGHT CURVES [PDF]

open access: yesThe Astrophysical Journal, 2012
48 pages, 13 ...
Chatzopoulos, Emmanouil   +2 more
openaire   +3 more sources

Pulsational pair-instability supernovae: gravitational collapse, black-hole formation, and beyond [PDF]

open access: yes, 2021
We investigate the final collapse of rotating and non-rotating pulsational pair-instability supernova progenitors with zero-age-main-sequence masses of 60, 80, and 115$\mathrm{M}_\odot$ and iron cores between 2.37$\mathrm{M}_\odot$ and 2.72$\mathrm{M}_ ...
Ninoy Rahman   +10 more
semanticscholar   +1 more source

Quintessence or phantom: Study of scalar field dark energy models through a general parametrization of the Hubble parameter [PDF]

open access: yesPhysics of the Dark Universe, 2022
In this work we propose a simple general parametrization scheme of the Hubble parameter for the scalar field dark energy models. In our approach it is possible to incorporate both the quintessence and phantom scalar field in a single analytical scheme ...
Nandan Roy, Sangita Goswami, Sudipta Das
semanticscholar   +1 more source

Generalized Chaplygin gas model, supernovae, and cosmic topology [PDF]

open access: yesPhysical Review D, 2006
In this work we study to which extent the knowledge of spatial topology may place constraints on the parameters of the generalized Chaplygin gas (GCG) model for unification of dark energy and dark matter. By using both the Poincaré dodecahedral and binary octahedral spaces as the observable spatial topologies, we examine the current type Ia supernovae (
Bento, M. C.   +3 more
openaire   +2 more sources

General-relativistic Radiation Transport Scheme in Gmunu. II. Implementation of Novel Microphysical Library for Neutrino Radiation—Weakhub [PDF]

open access: yesAstrophysical Journal Supplement Series, 2023
We introduce Weakhub, a novel neutrino microphysics library that provides opacities and kernels beyond conventional interactions used in the literature. This library includes neutrino–matter, neutrino–neutrino interactions and plasma process, along with ...
Harry Ho-Yin Ng   +3 more
semanticscholar   +1 more source

Seed magnetic Fields Generated by Primordial Supernova Explosions [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1998
Accepted for publication in MNRAS, 5 pages (MN plain TeX macros v1.6 file). Also available at http://www.iagusp.usp.br/~oswaldo (click "OPTIONS" and then "ARTICLES")
Miranda, O. D., Opher, M., Opher, R.
openaire   +2 more sources

Perturbations of nested branes with induced gravity [PDF]

open access: yes, 2014
We investigate the general properties of Unified Dark Matter (UDM) fluid models where the pressure and the energy density are linked by a barotropic equation of state (EoS) p = p(ρ) and the perturbations are adiabatic.
Sbisa, Fulvio, Koyama, Kazuya
core   +3 more sources

A NEW MULTI-DIMENSIONAL GENERAL RELATIVISTIC NEUTRINO HYDRODYNAMICS CODE FOR CORE-COLLAPSE SUPERNOVAE. IV. THE NEUTRINO SIGNAL [PDF]

open access: yes, 2014
Considering six general relativistic, two-dimensional (2D) supernova (SN) explosion models of progenitor stars between 8.1 and 27 M☉, we systematically analyze the properties of the neutrino emission from core collapse and bounce to the post-explosion ...
B. Müller, H. Janka
semanticscholar   +1 more source

Topics in Core-Collapse Supernova Theory: The Formation of Black Holes and the Transport of Neutrinos [PDF]

open access: yes, 2012
Core-Collapse Supernovae are one of the most complex astrophysical systems in the universe. They deeply entwine aspects of physics and astrophysics that are rarely side by side in nature.
O'Connor, Evan Patrick
core   +1 more source

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