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
A new equation of state for core-collapse supernovae based on realistic nuclear forces and including a full nuclear ensemble
Shun Furusawa,Hajime Togashi,Hiroki Nagakura,Kohsuke Sumiyoshi,Shoichi Yamada,Hideyuki Suzuki,Masatoshi Takano +6 more
TL;DR: In this paper, a nuclear equation of state (EOS) that includes a full nuclear ensemble for use in core-collapse supernova simulations is presented, based on the EOS for uniform nuclear matter that two of the authors derived recently.
Journal ArticleDOI
Main Nuclear Physics requirements for the robustness of r-process nucleosynthesis calculations in slow ejecta from neutron-star mergers (NSM)
TL;DR: In this paper, the main requirements from the nuclear physics point of view in order to guarantee a robust pattern in the final r-process abundances for mass numbers A > 120 were addressed.
Proceedings ArticleDOI
The Progress of Supernova Simulation Based on Code WZXW96
Menquan Liu,Jie Zhang +1 more
TL;DR: In this article, the authors reviewed the progress including the inner core acceleration mechanism, the convection in inner core, the screening effect on electron capture and the explosion energy, and introduced ongoing work for simulation.
Journal ArticleDOI
Machine Learning for Conservative-to-Primitive in Relativistic Hydrodynamics
TL;DR: In this article, neural networks are trained to replace interpolations of a tabulated equation of state or directly the conservative-to-primitive map for the recovery of primitives in relativistic hydrodynamics.
Journal ArticleDOI
What can we learn from gravitational waves from nearby core-collapse supernovae?
Yudai Suwa,Takaaki Yokozawa,Mitsuhiro Asano,T. Kayano,Nobuyuki Kanda,Yusuke Koshio,Mark R. Vagins,Mark R. Vagins +7 more
TL;DR: By performing multi-dimensional simulations of neutrino-radiation hydrodynamics systematically, the authors in this paper calculate the gravitational wave and neutrinos signals from nearby (galactic) core-collapse supernova.
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
Koichi Iwamoto,Paolo A. Mazzali,K. Nomoto,H. Umeda,T. Nakamura,Ferdinando Patat,I. J. Danziger,T. R. Young,T. Suzuki,Toshikazu Shigeyama,T. Augusteijn,V. Doublier,H. Boehnhardt,J. Brewer,Olivier Hainaut,C. Lidman,Bruno Leibundgut,Enrico Cappellaro,Massimo Turatto,Titus Galama,P. M. Vreeswijk,Chryssa Kouveliotou,J. van Paradijs,Elena Pian,E. Palazzi,F. Frontera +25 more
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
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
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.
Journal ArticleDOI
Neutrino-induced nucleosynthesis of A>64 nuclei: the nu p process
Carla Fröhlich,Gabriel Martínez-Pinedo,M. Liebendörfer,M. Liebendörfer,Friedrich-Karl Thielemann,Eduardo Bravo,William Raphael Hix,Karlheinz Langanke,Nikolaj Thomas Zinner +8 more
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.