Results 21 to 30 of about 32,797 (265)

Core-collapse Supernovae [PDF]

open access: yesProceedings of VI European Summer School on Experimental Nuclear Astrophysics — PoS(ENAS 6), 2013
Marking the inevitable death of a massive star, and the birth of a neutron star or black hole, core-collapse supernovae bring together physics at a wide range in spatial scales, from kilometer-sized hydrodynamic motions (growing to gigameter scale) down to femtometer scale nuclear reactions. Carrying 10$$^{51}$$ ergs of kinetic energy and a rich-mix of
William Raphael Hix   +8 more
openaire   +1 more source

Prospects for Extending the Core-collapse Supernova Detection Horizon Using High-energy Neutrinos

open access: yesThe Astrophysical Journal, 2023
Large neutrino detectors like IceCube monitor for core-collapse supernovae using low-energy (MeV) neutrinos with a detection reach from a supernova neutrino burst to the Magellanic Cloud. However, some models predict the emission of high-energy neutrinos
Nora Valtonen-Mattila, Erin O’Sullivan
doaj   +1 more source

Turbulence in core-collapse supernovae [PDF]

open access: yesJournal of Physics G: Nuclear and Particle Physics, 2018
Multidimensional simulations show that non-radial, turbulent, fluid motion is a fundamental component of the core-collapse supernova (CCSN) explosion mechanism. Neutrino-driven convection, the standing accretion shock instability, and relic-perturbations from advanced stages of nuclear burning can all impact the outcome of core collapse in a ...
David Radice   +5 more
openaire   +3 more sources

Early Hard X-Rays from the Nearby Core-collapse Supernova SN 2023ixf

open access: yesThe Astrophysical Journal Letters, 2023
We present NuSTAR observations of the nearby SN 2023ixf in M101 ( d = 6.9 Mpc) that provide the earliest hard X-ray detection of a nonrelativistic stellar explosion to date at δ t ≈ 4 days and δ t ≈ 11 days.
Brian W. Grefenstette   +4 more
doaj   +1 more source

The Type II-P Supernova 2019mhm and Constraints on its Progenitor System

open access: yesThe Astrophysical Journal, 2023
We present pre- and postexplosion observations of the Type II-P supernova (SN II-P) 2019mhm located in NGC 6753. Based on optical spectroscopy and photometry, we show that SN 2019mhm exhibits broad lines of hydrogen with a velocity of −8500 ± 200 km s ...
J. Vazquez   +6 more
doaj   +1 more source

Theory of core-collapse supernovae [PDF]

open access: yesPhysics Reports, 2007
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 ...
Janka, H.   +4 more
openaire   +3 more sources

Black Hole Formation Accompanied by the Supernova Explosion of a 40 M ⊙ Progenitor Star

open access: yesThe Astrophysical Journal, 2023
We have simulated the collapse and evolution of the core of a solar-metallicity 40 M _⊙ star and find that it explodes vigorously by the neutrino mechanism, despite its very high “compactness.” Within ∼1.5 s of explosion, a black hole forms.
Adam Burrows   +2 more
doaj   +1 more source

Constraining High-energy Neutrino Emission from Supernovae with IceCube

open access: yesThe Astrophysical Journal Letters, 2023
Core-collapse supernovae are a promising potential high-energy neutrino source class. We test for correlation between seven years of IceCube neutrino data and a catalog containing more than 1000 core-collapse supernovae of types IIn and IIP and a sample ...
R. Abbasi   +393 more
doaj   +1 more source

Relativistic Jets in Core-collapse Supernovae [PDF]

open access: yesThe Astrophysical Journal Letters, 2019
Abstract After decades of extensive research the mechanism driving core-collapse supernovae (CCSNe) is still unclear. One common mechanism is a neutrino-driven outflow, but others have been proposed. Among those, a long-standing idea is that jets play an important role in supernova (SN) explosions. Gamma-ray bursts (GRBs) that accompany “
Tsvi Piran   +3 more
openaire   +4 more sources

The First Two Years of FLEET: An Active Search for Superluminous Supernovae

open access: yesThe Astrophysical Journal, 2023
In 2019 November, we began operating Finding Luminous and Exotic Extragalactic Transients (FLEET), a machine-learning algorithm designed to photometrically identify Type I superluminous supernovae (SLSNe) in transient alert streams.
Sebastian Gomez   +7 more
doaj   +1 more source

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