Axions produced in supernovae generate a diffuse gamma-ray signal through conversion in magnetic fields, yielding competitive constraints on the axion-photon coupling from COMPTEL, EGRET, and Fermi-LAT data plus forecasts for future MeV telescopes.
Theory of Core-Collapse Supernovae
10 Pith papers cite this work. Polarity classification is still indexing.
10
Pith papers citing it
abstract
Advances in our understanding and the modeling of stellar core-collapse and supernova explosions over the past 15 years are reviewed, concentrating on the evolution of hydrodynamical simulations, the description of weak interactions and nuclear equation of state effects, and new insights into the nucleosynthesis occurring in the early phases of the explosion, in particular the neutrino-p process. The latter is enabled by the proton-richness of the early ejecta, which was discovered because of significant progress has been made in the treatment of neutrino transport and weak interactions. This progress has led to a new generation of sophisticated Newtonian and relativistic hydrodynamics simulations in spherical symmetry. Based on these, it is now clear that the prompt bounce-shock mechanism is not the driver of supernova explosions, and that the delayed neutrino-heating mechanism can produce explosions without the aid of multi-dimensional processes only if the progenitor star has an ONeMg core inside a very dilute He-core, i.e., has a mass in the 8--10 solar mass range. Hydrodynamic instabilities of various kinds have indeed been recognized to occur in the supernova core and to be of potential importance for the explosion. Neutrino-driven explosions, however, have been seen in two-dimensional simulations with sophisticated neutrino transport so far only when the star has a small iron core and low density in the surrounding shells as being found in stars near 10--11 solar masses. The explosion mechanism of more massive progenitors is still a puzzle. It might involve effects of three-dimensional hydrodynamics or might point to the relevance of rapid rotation and magnetohydrodynamics, or to still incompletely explored properties of neutrinos and the high-density equation of state.
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Magnetic fields modify bulk viscous dissipation in post-merger neutron star matter by altering direct and modified Urca rates at finite temperature beyond the Fermi surface approximation.
Lambda hyperons equilibrate rapidly in post-collapse proto-neutron stars through nonleptonic NN to N Lambda processes and enhance low-energy muon neutrino opacities beyond nucleonic contributions.
Proposes using solar ^8B and muon-decay-at-rest neutrinos as calibration sources to constrain the ν_e-Ar cross section and reduce nuclear model bias in DUNE supernova neutrino detection.
Semi-analytical fits are derived for millicharged particle energy-loss rates in three regimes relevant to pre-supernova stellar cores.
A parametrization of SASI is introduced that allows IceCube to identify the instability epoch and reconstruct its frequency, peak time, amplitude, and duration from Galactic supernova neutrino signals at sub-percent to ten-percent precision.
Treating longitudinal and transverse polarizations of light Z' bosons independently modifies the SN1987A bounds on their parameter space in the Lμ-Lτ model.
Constraints on temperature-dependent CPT-violating electron-positron mass asymmetry b0(T) = α T² from BBN abundances of 4He, D, and Neff give α ≳ 10^{-6} GeV^{-1} for keV-scale effects at BBN.
Dark matter cores heat baryonic matter in evolving proto-neutron stars by deepening the gravitational potential while halos cool it, providing a diagnostic distinct from hyperons.
The paper supplies an introductory lecture-style summary of observational techniques, astronomical sources, and physical processes across the four main messengers in multi-messenger astronomy.
citing papers explorer
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Lights, Camera, Axion: Tracing Axions from Supernovae in the Diffuse $\gamma$-ray Sky
Axions produced in supernovae generate a diffuse gamma-ray signal through conversion in magnetic fields, yielding competitive constraints on the axion-photon coupling from COMPTEL, EGRET, and Fermi-LAT data plus forecasts for future MeV telescopes.
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Thermal and Magnetic effects on Bulk Viscosity in Binary Neutron Star Mergers
Magnetic fields modify bulk viscous dissipation in post-merger neutron star matter by altering direct and modified Urca rates at finite temperature beyond the Fermi surface approximation.
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$\Lambda$ hyperons in core-collapse supernovae: Equilibration and neutrino opacities
Lambda hyperons equilibrate rapidly in post-collapse proto-neutron stars through nonleptonic NN to N Lambda processes and enhance low-energy muon neutrino opacities beyond nucleonic contributions.
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Standard Candles for Supernova Neutrino Detection at DUNE
Proposes using solar ^8B and muon-decay-at-rest neutrinos as calibration sources to constrain the ν_e-Ar cross section and reduce nuclear model bias in DUNE supernova neutrino detection.
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Millicharged Particle Production During Late-Stage Stellar Evolution
Semi-analytical fits are derived for millicharged particle energy-loss rates in three regimes relevant to pre-supernova stellar cores.
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Parameterizing the Standing Accretion Shock Instability for Inference with Galactic Supernova Neutrino Signals at IceCube
A parametrization of SASI is introduced that allows IceCube to identify the instability epoch and reconstruct its frequency, peak time, amplitude, and duration from Galactic supernova neutrino signals at sub-percent to ten-percent precision.
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SN1987A Constraints of Light $\boldsymbol{Z'}$ with Non-Mixing Polarisations
Treating longitudinal and transverse polarizations of light Z' bosons independently modifies the SN1987A bounds on their parameter space in the Lμ-Lτ model.
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Temperature-Dependent CPT Violation: Constraints from Big Bang Nucleosynthesis
Constraints on temperature-dependent CPT-violating electron-positron mass asymmetry b0(T) = α T² from BBN abundances of 4He, D, and Neff give α ≳ 10^{-6} GeV^{-1} for keV-scale effects at BBN.
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Dark Matter Heating in Evolving Proto-Neutron Stars: A Two-Fluid Approach
Dark matter cores heat baryonic matter in evolving proto-neutron stars by deepening the gravitational potential while halos cool it, providing a diagnostic distinct from hyperons.
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Introduction to multi-messenger astronomy
The paper supplies an introductory lecture-style summary of observational techniques, astronomical sources, and physical processes across the four main messengers in multi-messenger astronomy.