scholarly journals Gravitational waves from 3D core-collapse supernova models: The impact of moderate progenitor rotation

2019 ◽  
Vol 486 (2) ◽  
pp. 2238-2253 ◽  
Author(s):  
H Andresen ◽  
E Müller ◽  
H-Th Janka ◽  
A Summa ◽  
K Gill ◽  
...  
Keyword(s):  
Gravitational Waves ◽  
Core Collapse ◽  
Core Collapse Supernova ◽  
The Impact

scholarly journals PROBING THE ROTATION OF CORE-COLLAPSE SUPERNOVA WITH A CONCURRENT ANALYSIS OF GRAVITATIONAL WAVES AND NEUTRINOS

2015 ◽  
Vol 811 (2) ◽  
pp. 86 ◽  
Author(s):  
Takaaki Yokozawa ◽  
Mitsuhiro Asano ◽  
Tsubasa Kayano ◽  
Yudai Suwa ◽  
Nobuyuki Kanda ◽  
...  
Keyword(s):  
Gravitational Waves ◽  
Core Collapse ◽  
Core Collapse Supernova ◽  
Concurrent Analysis

scholarly journals The Impact of Nuclear Reaction Rate Uncertainties on the Evolution of Core-collapse Supernova Progenitors

2018 ◽  
Vol 234 (2) ◽  
pp. 19 ◽  
Author(s):  
C. E. Fields ◽  
F. X. Timmes ◽  
R. Farmer ◽  
I. Petermann ◽  
William M. Wolf ◽  
...  
Keyword(s):  
Nuclear Reaction ◽  
Reaction Rate ◽  
Core Collapse ◽  
Core Collapse Supernova ◽  
The Impact ◽  
Nuclear Reaction Rate

scholarly journals A systematic study of proto-neutron star convection in three-dimensional core-collapse supernova simulations

2020 ◽  
Vol 492 (4) ◽  
pp. 5764-5779 ◽  
Author(s):  
Hiroki Nagakura ◽  
Adam Burrows ◽  
David Radice ◽  
David Vartanyan
Keyword(s):  
Neutron Star ◽  
Systematic Study ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Core Collapse ◽  
Core Collapse Supernova ◽  
Tau Neutrinos ◽  
The Impact ◽  
Proto Neutron Star

ABSTRACT This paper presents the first systematic study of proto-neutron star (PNS) convection in three dimensions (3D) based on our latest numerical fornax models of core-collapse supernova (CCSN). We confirm that PNS convection commonly occurs, and then quantify the basic physical characteristics of the convection. By virtue of the large number of long-term models, the diversity of PNS convective behaviour emerges. We find that the vigour of PNS convection is not correlated with CCSN dynamics at large radii, but rather with the mass of PNS − heavier masses are associated with stronger PNS convection. We find that PNS convection boosts the luminosities of νμ, ντ, $\bar{\nu }_{\mu }$, and $\bar{\nu }_{\tau }$ neutrinos, while the impact on other species is complex due to a competition of factors. Finally, we assess the consequent impact on CCSN dynamics and the potential for PNS convection to generate pulsar magnetic fields.

scholarly journals The Status of Multi-Dimensional Core-Collapse Supernova Models

2016 ◽  
Vol 33 ◽  
Author(s):  
B. Müller
Keyword(s):  
Initial Conditions ◽  
Massive Stars ◽  
Core Collapse ◽  
Solar Mass ◽  
Convective Boundary ◽  
3D Simulations ◽  
Core Collapse Supernova ◽  
Wide Range ◽  
Supernova Explosions ◽  
The Impact

AbstractModels of neutrino-driven core-collapse supernova explosions have matured considerably in recent years. Explosions of low-mass progenitors can routinely be simulated in 1D, 2D, and 3D. Nucleosynthesis calculations indicate that these supernovae could be contributors of some lighter neutron-rich elements beyond iron. The explosion mechanism of more massive stars remains under investigation, although first 3D models of neutrino-driven explosions employing multi-group neutrino transport have become available. Together with earlier 2D models and more simplified 3D simulations, these have elucidated the interplay between neutrino heating and hydrodynamic instabilities in the post-shock region that is essential for shock revival. However, some physical ingredients may still need to be added/improved before simulations can robustly explain supernova explosions over a wide range of progenitors. Solutions recently suggested in the literature include uncertainties in the neutrino rates, rotation, and seed perturbations from convective shell burning. We review the implications of 3D simulations of shell burning in supernova progenitors for the ‘perturbations-aided neutrino-driven mechanism,’ whose efficacy is illustrated by the first successful multi-group neutrino hydrodynamics simulation of an 18 solar mass progenitor with 3D initial conditions. We conclude with speculations about the impact of 3D effects on the structure of massive stars through convective boundary mixing.

scholarly journals Impact of sterile neutrino dark matter on core-collapse supernovae

2016 ◽  
Vol 31 (25) ◽  
pp. 1650137 ◽  
Author(s):  
Mackenzie L. Warren ◽  
Grant J. Mathews ◽  
Matthew Meixner ◽  
Jun Hidaka ◽  
Toshitaka Kajino
Keyword(s):  
Dark Matter ◽  
Sterile Neutrino ◽  
Core Collapse ◽  
Observable Effect ◽  
Sterile Neutrinos ◽  
X Ray ◽  
Core Collapse Supernova ◽  
Electron Neutrinos ◽  
Supernova Explosions ◽  
The Impact

We summarize the impact of sterile neutrino dark matter on core-collapse supernova explosions. We explore various oscillations between electron neutrinos or mixed [Formula: see text] neutrinos and right-handed sterile neutrinos that may occur within a core-collapse supernova. In particular, we consider sterile neutrino masses and mixing angles that are consistent with sterile neutrino dark matter candidates as indicated by recent X-ray flux measurements. We find that the interpretation of the observed 3.5 keV X-ray excess as due to a decaying 7 keV sterile neutrino that comprises 100% of the dark matter would have almost no observable effect on supernova explosions. However, in the more realistic case in which the decaying sterile neutrino comprises only a small fraction of the total dark matter density due to the presence of other sterile neutrino flavors, WIMPs, etc. a larger mixing angle is allowed. In this case a 7 keV sterile neutrino could have a significant impact on core-collapse supernovae. We also consider mixing between [Formula: see text] neutrinos and sterile neutrinos. We find, however, that this mixing does not significantly alter the explosion and has no observable effect on the neutrino luminosities at early times.

scholarly journals Inferring core-collapse supernova physics with gravitational waves

2012 ◽  
Vol 86 (4) ◽  
Author(s):  
J. Logue ◽  
C. D. Ott ◽  
I. S. Heng ◽  
P. Kalmus ◽  
J. H. C. Scargill
Keyword(s):  
Gravitational Waves ◽  
Core Collapse ◽  
Core Collapse Supernova

scholarly journals Multi-messenger signals from core-collapse supernovae

2016 ◽  
Vol 12 (S329) ◽  
pp. 428-428
Author(s):  
Ko Nakamura ◽  
Shunsaku Horiuchi ◽  
Masaomi Tanaka ◽  
Kazuhiro Hayama ◽  
Tomoya Takiwaki ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Gravitational Waves ◽  
Direct Detection ◽  
Core Collapse ◽  
Core Collapse Supernova ◽  
The Core ◽  
Multi Wavelength

AbstractThe next Galactic supernova is expected to bring great opportunities for the direct detection of gravitational waves, full flavor neutrinos, and multi-wavelength photons. To prepare for appropriate observations of these multi-messenger signals, we use a long-term numerical simulation of the core-collapse supernova and discuss detectability of the signals in different situations. By exploring the sequential multi-messenger signals of a nearby CCSN, we discuss preparations for maximizing successful studies of such an unprecedented stirring event.

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