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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Journal ArticleDOI
Two-Dimensional Core-Collapse Supernova Models with Multi-Dimensional Transport
TL;DR: In this paper, a two-dimensional axisymmetric neutrino radiation/hydrodynamic model of core-collapse supernova (CCSN) cores is presented.
Journal ArticleDOI
Simulations of the Early Post-Bounce Phase of Core-Collapse Supernovae in Three-Dimensional Space with Full Boltzmann Neutrino Transport
Wakana Iwakami,Hirotada Okawa,Hiroki Nagakura,Akira Harada,Shun Furusawa,Kosuke Sumiyoshi,Hideo Matsufuru,Shoichi Yamada +7 more
TL;DR: In this article, a core-collapse supernova simulation was conducted for a 11.2 M progenitor model in three-dimensional space up to 20 ms after bounce, using a radiation hydrodynamics code with full Boltzmann neutrino transport.
Journal ArticleDOI
The aspherical explosion of the Type IIP SN 2017gmr
Tohru Nagao,Tohru Nagao,Aleksandar Cikota,Ferdinando Patat,S. Taubenberger,Mattia Bulla,Tamar Faran,David J. Sand,S. Valenti,Jennifer E. Andrews,Daniel E. Reichart +10 more
TL;DR: Nagao et al. as discussed by the authors reported the case of an SN IIP (SN 2017gmr) that shows an unusually early rise of the polarization, 30 d before the start of the tail phase.
Journal ArticleDOI
Medium modifications for light and heavy nuclear clusters in simulations of core collapse supernovae: Impact on equation of state and weak interactions
TL;DR: In this article, the role of heavy nuclear clusters and weakly bound light nuclear clusters based on a newly developed equation of state for core collapse supernova studies is investigated, taking into account the quasiparticle approach and continuum correlations.
Journal ArticleDOI
Nucleosynthesis Constraints on The Energy Growth Timescale of a Core-Collapse Supernova Explosion
Ryo Sawada,Keiichi Maeda +1 more
TL;DR: In this article, the authors employ one-dimensional hydrodynamic and nucleosynthesis simulations above the proto-neutron star core, by parameterizing the nature of the explosion mechanism.
References
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