Explosion Mechanisms of Core-Collapse Supernovae
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TLDR
The neutrino-heating mechanism, aided by nonradial flows, drives explosions, albeit low-energy ones, of ONeMg-core and some Fe-core progenitors as discussed by the authors.Abstract:
Supernova theory, numerical and analytic, has made remarkable progress in the past decade. This progress was made possible by more sophisticated simulation tools, especially for neutrino transport, improved microphysics, and deeper insights into the role of hydrodynamic instabilities. Violent, large-scale nonradial mass motions are generic in supernova cores. The neutrino-heating mechanism, aided by nonradial flows, drives explosions, albeit low-energy ones, of ONeMg-core and some Fe-core progenitors. The characteristics of the neutrino emission from new-born neutron stars were revised, new features of the gravitational-wave signals were discovered, our notion of supernova nucleosynthesis was shattered, and our understanding of pulsar kicks and explosion asymmetries was significantly improved. But simulations also suggest that neutrino-powered explosions might not explain the most energetic supernovae and hypernovae, which seem to demand magnetorotational driving. Now that modeling is being advanced from two to three dimensions, more realism, new perspectives, and hopefully answers to long-standing questions are coming into reach.read more
Citations
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Lifting the core-collapse supernova bounds on keV-mass sterile neutrinos
TL;DR: In this paper, the energy and entropy transport as well as the lepton number variation induced from the mixing between electron and sterile neutrinos with keV mass in the supernova core were investigated.
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PUSHing Core-Collapse Supernovae to Explosions in Spherical Symmetry III: Nucleosynthesis Yields
Sanjana Curtis,Kevin Ebinger,Carla Fröhlich,Matthias Hempel,Albino Perego,Albino Perego,Albino Perego,Matthias Liebendörfer,Friedrich-Karl Thielemann +8 more
TL;DR: In this article, a parametrized spherically symmetric explosion method (PUSH) is proposed to reproduce many features of core-collapse supernovae for a wide range of pre-explosion models.
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Probing neutron–proton effective mass splitting using nuclear stopping and isospin mix in heavy-ion collisions in GeV energy region
Fan Zhang,Jun Su +1 more
TL;DR: In this paper, the effect of mass splitting on the nuclear stopping and isospin tracer during heavy-ion collisions within the gigaelectron volt energy region was studied using an isotope-dependent quantum molecular dynamics model.
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Nuclear physics uncertainties in neutrino-driven, neutron-rich supernova ejecta
TL;DR: In this article, the sensitivity of elemental abundances to specific reaction-rate uncertainties under different astrophysical conditions was investigated for 36 representative conditions of CCSNe neutrino-driven winds.
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Nuclear pasta in hot dense matter and its implications for neutrino scattering
TL;DR: In this paper, the abundance of large clusters of nucleons in neutron-rich matter at sub-nuclear density is found to be greatly reduced by finite-temperature effects when matter is close to ''ensuremath{\beta}$ equilibrium, compared to the case where the electron fraction is fixed at ${Y}_{e}g0.1$
References
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