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Young massive stars in compact stellar clusters could end their evolution as core-collapse supernovae a few million years after the cluster was built. The blast wave of a supernova propagates through the inner cluster region with multiple…

High Energy Astrophysical Phenomena · Physics 2023-11-06 D. V. Badmaev , A. M. Bykov , M. E. Kalyashova

The first full-scale three-dimensional (3D) core-collapse supernova (SN) simulations with sophisticated neutrino transport show pronounced effects of the standing accretion shock instability (SASI) for two high-mass progenitors (20 and 27…

Solar and Stellar Astrophysics · Physics 2013-09-25 Irene Tamborra , Florian Hanke , Bernhard Mueller , Hans-Thomas Janka , Georg Raffelt

We develop a new semi-dynamical method to study shock revival by neutrino heating in core- collapse supernovae. Our new approach is an extension of the previous studies that employ spherically symmetric, steady, shocked accretion flows…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Hiroki Nagakura , Yu Yamamoto , Shoichi Yamada

Core-collapse supernovae are connected with formation of neutron stars. Part of the gravitation energy is transformed into the energy of the explosion, observed in SN II, SN Ib,c type supernovae. The mechanism of transformation is not…

Astrophysics · Physics 2007-05-23 G. S. Bisnovatyi-Kogan , S. G. Moiseenko , N. V. Ardeljan

A key test of the supernova triggering and injection hypothesis for the origin of the solar system's short-lived radioisotopes is to reproduce the inferred initial abundances of these isotopes. We present here the most detailed models to…

Solar and Stellar Astrophysics · Physics 2015-06-19 Alan P. Boss , Sandra A. Keiser

Multi-dimensional hydrodynamic simulations of the post-bounce evolution of collapsed stellar iron cores have demonstrated that convective overturn between the stalled shock and the neutrinosphere can have an important effect on the…

Astrophysics · Physics 2007-05-23 H. -Th. Janka

The properties of a new-born neutron star, produced in a core-collapse supernova, can be strongly affected by the possible late fallback which occurs several hours after the explosion. This accretion occurs in the regime dominated by…

High Energy Astrophysical Phenomena · Physics 2010-06-16 Cristian Giovanny Bernal , William H. Lee , Dany Page

Pulsars are one of the possible final stages in the evolution of massive stars. If a supernova explosion is anisotropic, it can give the pulsar a powerful kick, propelling it to supersonic speeds. The resulting pulsar wind nebula is…

High Energy Astrophysical Phenomena · Physics 2025-03-28 D. M. A. Meyer , D. F. Torres , Z. Meliani

We present results from the first generation of multi-dimensional general relativistic neutrino hydrodynamics simulations of core-collapse supernovae. A comparison with models computed using either the purely Newtonian approximation or the…

Solar and Stellar Astrophysics · Physics 2011-12-09 Bernhard Mueller , Andreas Marek , Hans-Thomas Janka , Harald Dimmelmeier

Our understanding of the core-collapse supernova explosion mechanism is incomplete. While the favoured scenario is delayed revival of the stalled shock by neutrino heating, it is difficult to reliably compute explosion outcomes and…

High Energy Astrophysical Phenomena · Physics 2022-03-08 Sarah E. Gossan , Jim Fuller , Luke F. Roberts

We present the results of 2D simulations of the magnetorotational model of a supernova explosion. After the core collapse the core consists of rapidly a rotating proto-neutron star and a differentially rotating envelope. The toroidal part…

Astrophysics · Physics 2009-11-10 N. V. Ardeljan , G. S. Bisnovatyi-Kogan , S. G. Moiseenko

Merging our supernova code F{\sc{ornax}} with the Box3D fast-flavor neutrino oscillation formalism, we explore the effects of fast-flavor conversion (FFC) in state-of-the-art 1D and 2D core-collapse supernova simulations. We find that after…

High Energy Astrophysical Phenomena · Physics 2025-05-14 Tianshu Wang , Adam Burrows

Ascertaining the core-collapse supernova mechanism is a complex, and yet unsolved, problem dependent on the interaction of general relativity, hydrodynamics, neutrino transport, neutrino-matter interactions, and nuclear equations of state…

Accurate description of neutrino opacities is central both to the core-collapse supernova (CCSN) phenomenon and to the validity of the explosion mechanism itself. In this work, we study in a systematic fashion the role of a variety of…

High Energy Astrophysical Phenomena · Physics 2018-02-08 Kei Kotake , Tomoya Takiwaki , Tobias Fischer , Ko Nakamura , Gabriel Martínez-Pinedo

In the classical picture, electron-capture supernovae and the accretion-induced collapse of oxygen-neon white dwarfs (ONeWDs) undergo an oxygen deflagration phase before gravitational collapse produces a neutron star (NS). These types of…

Solar and Stellar Astrophysics · Physics 2016-09-28 Samuel Jones , Friedrich K. Roepke , Ruediger Pakmor , Ivo R. Seitenzahl , Sebastian T. Ohlmann , Philipp V. F. Edelmann

We investigate the evolution of supernova remnants (SNRs) in a two-phase cloudy medium by performing a series of high-resolution (up to $\Delta x\approx0.01\,\mathrm{pc}$), 3D hydrodynamical simulations including radiative cooling and…

Astrophysics of Galaxies · Physics 2024-11-21 Minghao Guo , Chang-Goo Kim , James M. Stone

We present a spherically symmetric, Newtonian core-collapse simulation of a 15 solar mass star with a 1.28 solar mass iron core. The time-, energy-, and angle-dependent transport of electron neutrinos and antineutrinos was treated with a…

Astrophysics · Physics 2009-10-31 M. Rampp , H. -Th. Janka

By implementing widely-used equations of state (EOS) from Lattimer & Swesty (LS) and H. Shen et al. (SHEN) in core-collapse supernova simulations, we explore possible impacts of these EOS on the post-bounce dynamics prior to the onset of…

High Energy Astrophysical Phenomena · Physics 2015-03-20 Yudai Suwa , Tomoya Takiwaki , Kei Kotake , Tobias Fischer , Matthias Liebendoerfer , Katsuhiko Sato

Shock breakout is the first electromagnetic signal from supernovae (SNe), which contains important information on the explosion energy and the size and chemical composition of the progenitor star. This paper presents the first…

High Energy Astrophysical Phenomena · Physics 2024-09-24 Wun-Yi Chen , Ke-Jung Chen , Masaomi Ono

High-resolution two-dimensional simulations were performed for the first five minutes of the evolution of a core collapse supernova explosion in a 15 solar mass blue supergiant progenitor. The computations start shortly after bounce and…

Astrophysics · Physics 2009-10-31 K. Kifonidis , T. Plewa , H. -Th. Janka , E. Mueller