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We present $\texttt{ExTraSS}$ (EXplosive TRAnsient Spectral Simulator), a newly developed code aimed at generating 3D spectra for supernovae in the nebular phase by using modern multi-dimensional explosion models as input. It is well…

High Energy Astrophysical Phenomena · Physics 2023-05-31 Bart van Baal , Anders Jerkstrand , Annop Wongwathanarat , Thomas H. Janka

We have conducted nineteen state-of-the-art 3D core-collapse supernova simulations spanning a broad range of progenitor masses. This is the largest collection of sophisticated 3D supernova simulations ever performed. We have found that…

High Energy Astrophysical Phenomena · Physics 2020-01-08 Adam Burrows , David Radice , David Vartanyan , Hiroki Nagakura , M. Aaron Skinner , Joshua Dolence

We present a new, state-of-the-art computation of the Diffuse Supernova Neutrino Background (DSNB), where we use neutrino spectra from multi-dimensional, multi-second core collapse supernova simulations - including both neutron-star and…

High Energy Astrophysical Phenomena · Physics 2026-01-21 Cecilia Lunardini , Tomoya Takiwaki , Tomoya Kinugawa , Shunsaku Horiuchi , Kei Kotake

In Limongi et al. (2024) we presented and discussed the main evolutionary properties and final fate of stars in the mass range 7-15 Msun. The evolutions of those models were computed by means of a medium size nuclear network that guaranteed…

Solar and Stellar Astrophysics · Physics 2025-05-29 Marco Limongi , Lorenzo Roberti , Agnese Falla , Alessandro Chieffi , Ken'ichi Nomoto

The explosion of core-collapse supernovae (CCSNe) is an extremely challenging problem, and there are still large uncertainties regarding which stars lead to successful explosions that leave behind a neutron star, and which ones will form a…

High Energy Astrophysical Phenomena · Physics 2024-12-30 Luca Boccioli , Giacomo Fragione

The well-studied type IIP SN 1987A, produced by the explosion of a blue supergiant (BSG) star, is a touchstone for massive-star evolution, simulations of neutrino-driven explosions, and modeling of light curves and spectra. In the framework…

Solar and Stellar Astrophysics · Physics 2015-09-02 Victor Utrobin , Annop Wongwathanarat , H. -Thomas Janka , Ewald Mueller

We perform stellar evolution simulation of first stars and calculate stellar yields from the first supernovae. The initial masses are taken from 12 to 140 Msun to cover the whole range of core-collapse supernova progenitors, and stellar…

Solar and Stellar Astrophysics · Physics 2015-06-22 Koh Takahashi , Hideyuki Umeda , Takashi Yoshida

The neutrino-driven explosion mechanism for core-collapse supernovae in its modern flavor relies on the additional support of hydrodynamical instabilities in achieving shock revival. Two possible candidates, convection and the so-called…

Solar and Stellar Astrophysics · Physics 2015-06-05 B. Mueller , H. -Th. Janka , A. Heger

It has long been recognized that the neutrinos detected from the next core-collapse supernova in the Galaxy have the potential to reveal important information about the dynamics of the explosion and the nucleosynthesis conditions as well as…

High Energy Astrophysical Phenomena · Physics 2016-08-23 Warren P. Wright , Gautam Nagaraj , James P. Kneller , Kate Scholberg , Ivo R. Seitenzahl

We present three-dimensional simulations of core-collapse supernovae using the FLASH code that follow the progression of the explosion to the stellar surface, starting from neutrino-radiation hydrodynamic simulations of the neutrino-driven…

High Energy Astrophysical Phenomena · Physics 2021-11-15 Michael A. Sandoval , W. Raphael Hix , O. E. Bronson Messer , Eric J. Lentz , J. Austin Harris

During the late stages of massive stellar evolution, failed supernovae (FSN) may form through core-collapse processes. The traditional evaluation criterion $\xi_{2.5}$ $=$ 0.45, primarily established using non-rotating progenitor models,…

Solar and Stellar Astrophysics · Physics 2026-01-14 Renyu Luo , Chunhua Zhu , Guoliang Lü , Helei Liu , Sufen Guo , Lei Li , Zhuowen Li

We present the first two-dimensional general relativistic (GR) simulations of stellar core collapse and explosion with the CoCoNuT hydrodynamics code in combination with the VERTEX solver for energy-dependent, three-flavor neutrino…

Solar and Stellar Astrophysics · Physics 2015-06-04 B. Mueller , H. -Th. Janka , A. Marek

We explore with self-consistent 2D F{\sc{ornax}} simulations the dependence of the outcome of collapse on many-body corrections to neutrino-nucleon cross sections, the nucleon-nucleon bremsstrahlung rate, electron capture on heavy nuclei,…

Solar and Stellar Astrophysics · Physics 2018-01-30 Adam Burrows , David Vartanyan , Joshua C. Dolence , M. Aaron Skinner , David Radice

Type II-plateau supernovae (SNe IIP) are the most numerous subclass of core-collapse SNe originating from massive stars. In the framework of the neutrino-driven explosion mechanism, we study the SN outburst properties for a red supergiant…

Solar and Stellar Astrophysics · Physics 2017-09-06 V. P. Utrobin , A. Wongwathanarat , H. -Th. Janka , E. Mueller

In order to explore various aspects of stellar evolution, supernovae, gamma ray bursts and nucleosynthesis, we have developed a new efficient stellar evolution code. In this paper we describe this new code and compare the results with the…

Solar and Stellar Astrophysics · Physics 2012-07-24 Hideyuki Umeda , Takashi Yoshida , Koh Takahashi

The neutrino-heating mechanism remains a viable possibility for the cause of the explosion in a wide mass range of supernova progenitors. This is demonstrated by recent two-dimensional hydrodynamic simulations with detailed,…

Astrophysics · Physics 2008-11-26 H. -Th. Janka , A. Marek , F. -S. Kitaura

We present the results of simulations of nucleosynthesis in a core-collapse supernova (CCSN) including the neutrino process. Using the Si layer of $13M_\odot$ zero-metal progenitor as the initial composition, we calculate the…

High Energy Astrophysical Phenomena · Physics 2025-12-23 Ryota Hatami , Nozomu Tominaga , Takashi Yoshida , Hideyuki Umeda , Tomoya Takiwaki

We provide a detailed description of the Chimera code, a code developed to model core collapse supernovae in multiple spatial dimensions. The core collapse supernova explosion mechanism remains the subject of intense research. Progress to…

We study the sensitivity of presupernova evolution and supernova nucleosynthesis yields of massive stars to variations of the helium-burning reaction rates within the range of their uncertainties. We use the current solar abundances from…

Solar and Stellar Astrophysics · Physics 2013-08-21 Christopher West , Alexander Heger , Sam M. Austin

Neutrino-driven convection plays a crucial role in the development of core-collapse supernova (CCSN) explosions. However, the complex mechanism that triggers the shock revival and the subsequent explosion has remained inscrutable for many…

Solar and Stellar Astrophysics · Physics 2020-06-24 Jordi Casanova , Eirik Endeve , Eric J. Lentz , O. E. Bronson Messer , W. Raphael Hix , J. Austin Harris , Stephen W. Bruenn