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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The impact of fallback on the compact remnants and chemical yields of core-collapse supernovae
TL;DR: Fallback in core-collapse supernovae plays a crucial role in determining the properties of the compact remnants and of the ejecta composition as mentioned in this paper, and the strongest spin and spin is imparted by partial fallback in an asymmetric explosion.
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Spectrum of the supernova relic neutrino background and metallicity evolution of galaxies
TL;DR: In this paper, the spectrum of the supernova relic neutrino (SRN) background from past stellar collapses including black hole formation (failed supernovae) is calculated.
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Exciting prospects for detecting late-time neutrinos from core-collapse supernovae
TL;DR: In this article, the authors provide a detailed model of neutrino emission from the different phases of the transition - explosion to proto-neutron star cooling to late-time formation of either neutron star or black hole.
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Implicit large eddy simulations of anisotropic weakly compressible turbulence with application to core-collapse supernovae
TL;DR: In this article, the authors assess the accuracy of ILES using numerical methods most commonly employed in computational astrophysics by means of a number of local simulations of driven, weakly compressible, anisotropic turbulence.
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Supernova equations of state including full nuclear ensemble with in-medium effects
TL;DR: In this article, the relativistic mean field theory with the TM1 parameter set for nucleons, the quantum approach for d, t, h and α as well as the liquid drop model for the other nuclei under the nuclear statistical equilibrium were used for core-collapse supernova simulations.
References
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Presupernova Evolution of Differentially Rotating Massive Stars Including Magnetic Fields
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