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
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Modern General Relativity: Black Holes, Gravitational Waves, and Cosmology
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A Novel multidimensional Boltzmann neutrino transport scheme for core-collapse supernovae
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J0453+1559: A neutron star–white dwarf binary from a thermonuclear electron-capture supernova?
TL;DR: In this paper, the authors show that the lower-mass component of the binary radio pulsar system J0453+1559 could instead be a white dwarf born in a thermonuclear electron-capture supernova (tECSN) event.
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Knudsen-number dependence of two-dimensional single-mode Rayleigh-Taylor fluid instabilities.
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References
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