scispace - formally typeset
Open AccessJournal ArticleDOI

Explosion Mechanisms of Core-Collapse Supernovae

Reads0
Chats0
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
More filters
Journal ArticleDOI

Two-Dimensional Core-Collapse Supernova Simulations with the Isotropic Diffusion Source Approximation for Neutrino Transport

TL;DR: In this paper, the neutrino mechanism of core-collapse supernova was investigated via non-relativistic, two-dimensional (2D), neutrinos radiation-hydrodynamic simulations.
Journal ArticleDOI

Direct formation of millisecond pulsars from rotationally delayed accretion-induced collapse of massive white dwarfs

TL;DR: In this paper, the authors present a new class of systems, where the MSPs are formed directly from a rotationally-delayed accretion-induced collapse of a super-Chandrasekhar mass white dwarf.
Journal ArticleDOI

Supernova 1987A: neutrino-driven explosions in three dimensions and light curves

TL;DR: In this paper, the authors study the dependence of explosion properties on the structure of four different blue supergiant (BSG) stars and compare the corresponding light curves with observations of SN 1987A, and perform 3D simulations with the PROMETHEUS code until about one day and map the results to the CRAB for the light curve calculations.
Journal ArticleDOI

Three-dimensional core-collapse supernova simulations of massive and rotating progenitors

TL;DR: In this article, the core-collapse of massive rotating and non-rotating progenitors is simulated with the general relativistic neutrino hydrodynamics code CoCoNuT-FMT.
Journal ArticleDOI

Magnetorotational core collapse of possible GRB progenitors – I. Explosion mechanisms

TL;DR: In this article, the authors investigate the explosion of stars with zero-age main-sequence masses between 20 and 35 solar masses and varying degrees of rotation and magnetic fields including ones commonly considered progenitors of gamma-ray bursts (GRBs).
References
More filters
Journal ArticleDOI

Hyper-Accreting Black Holes and Gamma-Ray Bursts

TL;DR: In this article, the authors used a numerical model for relativistic disk accretion to study steady-state accretion at high rates of gamma-ray burst (GRB) and found that neutrino annihilation in hyper-accreting black hole systems can explain bursts up to 10**52 erg.
Journal ArticleDOI

A `Hypernova' model for SN 1998bw associated with gamma-ray burst of 25 April 1998

TL;DR: The discovery of the peculiar supernova (SN) 1998bw and its possible association with the gamma-ray burst (GRB) 980425$ 1,2,3} provides new clues to the understanding of the explosion mechanism of very massive stars and to the origin of some classes of gamma ray bursts.
Journal ArticleDOI

SN 2006gy: Discovery of the most luminous supernova ever recorded, powered by the death of an extremely massive star like Eta Carinae

TL;DR: The most luminous supernova ever recorded was SN2006gy as discussed by the authors, which reached a peak magnitude of -22 and had a total radiated energy of 1e51 erg.
Journal ArticleDOI

Presupernova Evolution of Differentially Rotating Massive Stars Including Magnetic Fields

TL;DR: In this paper, the authors present the first stellar evolution calculations to follow the evolution of rotating massive stars including, at least approximately, all these effects, magnetic and non-magnetic, from the zero-age main sequence until the onset of iron core collapse.
Related Papers (5)