scholarly journals The antesonic condition for the explosion of core-collapse supernovae – I. Spherically symmetric polytropic models: stability and wind emergence

2018 ◽  
Vol 481 (3) ◽  
pp. 3293-3304 ◽  
Author(s):  
Matthias J Raives ◽  
Sean M Couch ◽  
Johnny P Greco ◽  
Ondřej Pejcha ◽  
Todd A Thompson
Keyword(s):  
Core Collapse ◽  
Spherically Symmetric

scholarly journals Simulation of the Spherically Symmetric Stellar Core Collapse, Bounce, and Postbounce Evolution of a Star of 13 Solar Masses with Boltzmann Neutrino Transport, and Its Implications for the Supernova Mechanism

2001 ◽  
Vol 86 (10) ◽  
pp. 1935-1938 ◽  
Author(s):  
Anthony Mezzacappa ◽  
Matthias Liebendörfer ◽  
O. E. Bronson Messer ◽  
W. Raphael Hix ◽  
Friedrich-Karl Thielemann ◽  
...  
Keyword(s):  
Core Collapse ◽  
Spherically Symmetric ◽  
Stellar Core

scholarly journals PARAMETRIZED SPHERICALLY SYMMETRIC CORE COLLAPSE SUPERNOVA SIMULATIONS: PUSH

2015 ◽  
Author(s):  
Kevin Ebinger ◽  
Albino Perego ◽  
M. Hempel ◽  
Carla Frohlich ◽  
Marius Eichler ◽  
...  
Keyword(s):  
Core Collapse ◽  
Spherically Symmetric ◽  
Core Collapse Supernova

scholarly journals Radio Observations of SN2004dk with VLITE Confirm Late-time Rebrightening

2021 ◽  
Vol 923 (1) ◽  
pp. 32
Author(s):  
A. Balasubramanian ◽  
A. Corsi ◽  
E. Polisensky ◽  
T. E. Clarke ◽  
N. E. Kassim
Keyword(s):  
Mass Loss ◽  
Strong Interaction ◽  
Light Curves ◽  
Core Collapse ◽  
Late Time ◽  
Spherically Symmetric ◽  
Complex Environment ◽  
Radio Observations ◽  
The Galaxy ◽  
Using Data

Abstract The study of stripped-envelope core-collapse supernovae (SNe), with evidence for strong interaction of SN ejecta with the circumstellar medium (CSM), provides insights into the pre-supernova progenitor, and a fast-forwarded view of the progenitor mass-loss history. In this context, we present late-time radio observations of SN 2004dk, a Type Ibc supernova located in the galaxy NGC 6118, at a distance of d L ≈ 23 Mpc. About 10 yr after explosion, SN 2004dk has shown evidence for Hα emission, possibly linked to the SN ejecta interacting with a H-rich CSM. Using data from the VLA Low Band Ionosphere and Transient Experiment (VLITE), we confirm the presence of a late-time radio rebrightening accompanying the observed Hα emission. We model the SN 2004dk radio light curves within the (spherically symmetric) synchrotron-self-absorption (SSA) model. Within this model, our VLITE observations combined with previously collected VLA data favor an interpretation of SN 2004dk as a strongly CSM-interacting radio SN going through a complex environment shaped by nonsteady mass loss from the SN progenitor.

scholarly journals Multimessengers from Core-Collapse Supernovae: Multidimensionality as a Key to Bridge Theory and Observation

2012 ◽  
Vol 2012 ◽  
pp. 1-46 ◽  
Author(s):  
Kei Kotake ◽  
Tomoya Takiwaki ◽  
Yudai Suwa ◽  
Wakana Iwakami Nakano ◽  
Shio Kawagoe ◽  
...  
Keyword(s):  
Neutron Star ◽  
Gravitational Waves ◽  
Massive Stars ◽  
Neutrino Flux ◽  
Core Collapse ◽  
Spherically Symmetric ◽  
Hydrodynamic Instabilities ◽  
Important Ingredient ◽  
Hydrodynamic Simulations ◽  
Explosion Mechanism

Core-collapse supernovae are dramatic explosions marking the catastrophic end of massive stars. The only means to get direct information about the supernova engine is from observations of neutrinos emitted by the forming neutron star, and through gravitational waves which are produced when the hydrodynamic flow or the neutrino flux is not perfectly spherically symmetric. The multidimensionality of the supernova engine, which breaks the sphericity of the central core such as convection, rotation, magnetic fields, and hydrodynamic instabilities of the supernova shock, is attracting great attention as the most important ingredient to understand the long-veiled explosion mechanism. Based on our recent work, we summarize properties of gravitational waves, neutrinos, and explosive nucleosynthesis obtained in a series of our multidimensional hydrodynamic simulations and discuss how the mystery of the central engines can be unraveled by deciphering these multimessengers produced under the thick veils of massive stars.

scholarly journals Explosion dynamics of parametrized spherically symmetric core-collapse supernova simulations

2018 ◽  
Vol 940 ◽  
pp. 012039
Author(s):  
K Ebinger ◽  
A Perego ◽  
M Hempel ◽  
C Fröhlich ◽  
M Eichler ◽  
...  
Keyword(s):  
Core Collapse ◽  
Spherically Symmetric ◽  
Core Collapse Supernova

scholarly journals Explosion energies for core-collapse supernovae I: analytic, spherically symmetric solutions

2020 ◽  
Vol 500 (4) ◽  
pp. 5393-5407
Author(s):  
Mariam Gogilashvili ◽  
Jeremiah W Murphy ◽  
Quintin Mabanta
Keyword(s):  
Analytic Solution ◽  
Free Fall ◽  
Analytic Solutions ◽  
Explosion Energy ◽  
Core Collapse ◽  
Spherically Symmetric ◽  
Energy Evolution ◽  
Fall Velocity ◽  
Dynamical Time ◽  
Analytic Models

ABSTRACT Recent multidimensional simulations of core-collapse supernovae are producing successful explosions and explosion-energy predictions. In general, the explosion-energy evolution is monotonic and relatively smooth, suggesting a possible analytic solution. We derive analytic solutions for the expansion of the gain region under the following assumptions: spherical symmetry, one-zone shell, and powered by neutrinos and α particle recombination. We consider two hypotheses: (I) explosion energy is powered by neutrinos and α recombination and (II) explosion energy is powered by neutrinos alone. Under these assumptions, we derive the fundamental dimensionless parameters and analytic scalings. For the neutrino-only hypothesis (II), the asymptotic explosion energy scales as $E_{\infty } \approx 1.5 M_\mathrm{ g}\nu _0^2 \eta ^{2/3}$, where Mg is the gain mass, $\nu _0$ is the free-fall velocity at the shock, and η is a ratio of the heating and dynamical time-scales. Including both neutrinos and recombination (hypothesis I), the asymptotic explosion energy is $E_{\infty } \approx M_g \nu _0^2 (1.5\eta ^{2/3} + \beta f(\rho _0))$, where β is the dimensionless recombination parameter. We use Bayesian inference to fit these analytic models to simulations. Both hypotheses fit the simulations of the lowest progenitor masses that tend to explode spherically. The fits do not prefer hypothesis I or II; however, prior investigations suggest that α recombination is important. As expected, neither hypothesis fits the higher mass simulations that exhibit aspherical explosions. In summary, this explosion energy theory is consistent with the spherical explosions of low progenitor masses; the inconsistency with higher progenitor-mass simulations suggests that a theory for them must include aspherical dynamics.

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