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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Magnetic field amplification and magnetically supported explosions of collapsing, non-rotating stellar cores
TL;DR: In this paper, the authors studied the amplification of magnetic fields in the collapse and the post-bounce evolution of the core of a non-rotating star of 15 solar masses in axisymmetry.
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The Remnant of Supernova 1987A
Richard McCray,Claes Fransson +1 more
TL;DR: Although it has faded by a factor of ∼107, SN 1987A is still bright enough to be observed in almost every band of the electromagnetic spectrum as mentioned in this paper, and its luminosity is dominated by a far-infrared (∼200μm) continuum from ∼0.5 M⊙ of dust grains in the interior debris.
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Neutrino-driven explosions of ultra-stripped Type Ic supernovae generating binary neutron stars
TL;DR: In this article, the authors studied the explosion characteristics of ultra-stripped supernovae (SNe), which are candidates of SNe generating binary neutron stars (NSs), and found that the ultrastripped SN is a candidate for producing the secondary low-mass NS in the observed compact binary NSs like PSR J0737-3039.
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Plasma physics of extreme astrophysical environments.
TL;DR: In this paper, the relativistic quantum plasma (RQP) physics based on quantum electrodynamics (QED) has been studied in the field of astrophysics.
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Characterizing SASI- and convection-dominated core-collapse supernova explosions in two dimensions
TL;DR: In this article, the authors examine the flow dynamics in the neighborhood of explosion by means of parametric two-dimensional, time-dependent hydrodynamic simulations for which the linear stability properties are well understood.
References
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Nathan Smith,Wei Li,Ryan J. Foley,J. Craig Wheeler,D. Pooley,Ryan Chornock,Alexei V. Filippenko,Jeffrey M. Silverman,Robert M. Quimby,Joshua S. Bloom,Charles E. Hansen +10 more
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Presupernova Evolution of Differentially Rotating Massive Stars Including Magnetic Fields
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TL;DR: The nu p process as mentioned in this paper is a nucleosynthesis process that occurs in supernovae (and possibly gamma-ray bursts) when strong neutrino fluxes create proton-rich ejecta.