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
Progenitor-dependent Explosion Dynamics in Self-consistent, Axisymmetric Simulations of Neutrino-driven Core-collapse Supernovae
Alexander Summa,Florian Hanke,Hans-Thomas Janka,Tobias Melson,Andreas Marek,Bernhard Müller,Bernhard Müller +6 more
TL;DR: In this article, the authors present self-consistent axisymmetric core-collapse supernova simulations performed with the Prometheus-Vertex code for 18 pre-supernova models in the range of 11-28 solar masses, including progenitors recently investigated by other groups.
Journal ArticleDOI
Protomagnetar and black hole formation in high-mass stars
M. Obergaulinger,M. Á. Aloy +1 more
TL;DR: In this paper, axisymmetric simulations coupling special relativistic MHD, an approximate post-Newtonian gravitational potential and two-moment neutrino transport were used to show different paths for the formation of either protomagnetars or stellar mass black holes.
Journal ArticleDOI
Three-dimensional boltzmann hydro code for core collapse in massive stars. i. special relativistic treatments
TL;DR: In this paper, a numerical method for solving multi-dimensional, special relativistic Boltzmann equations for neutrinos coupled with hydrodynamics equations is proposed for simulations of core-collapse supernovae.
Journal ArticleDOI
The Nickel Mass Distribution of Normal Type II Supernovae
Tomás Müller,Tomás Müller,Jose L. Prieto,Jose L. Prieto,Ondřej Pejcha,Alejandro Clocchiatti,Alejandro Clocchiatti +6 more
TL;DR: In this paper, the authors used the global fitting technique of Pejcha & Prieto (2015a,b) to estimate a set of physical parameters of 19 normal Type II SNe, such as their distance moduli, reddenings, Ni masses, and explosion energies from multicolor light curves and photospheric velocity curves.
References
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