Results 1 to 10 of about 31,180 (215)

Revealing the Progenitor of SN 2021zby through Analysis of the TESS Shock-cooling Light Curve

open access: yesThe Astrophysical Journal Letters, 2023
We present early observations and analysis of the double-peaked Type IIb supernova (SN IIb) SN 2021zby. TESS captured the prominent early shock-cooling peak of SN 2021zby within the first ∼10 days after explosion with a 30 minute cadence.
Qinan Wang   +43 more
doaj   +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

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

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

Neutrinos from core-collapse supernovae at KM3NeT [PDF]

open access: yesEPJ Web of Conferences, 2023
The SN1987A supernova was the first extragalactic neutrino de- tection, but no further observations have been made since. Detecting neutrinos from a galactic supernova would provide invaluable information on the supernova mechanism and particle behavior ...
Bendahman Meriem
doaj   +1 more source

Long gamma-ray bursts and core-collapse supernovae have different environments [PDF]

open access: yes, 2006
When massive stars exhaust their fuel they collapse and often produce the extraordinarily bright explosions known as core-collapse supernovae. On occasion, this stellar collapse also powers an even more brilliant relativistic explosion known as a long ...
A Heger   +80 more
core   +3 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

Type Ic core-collapse supernova explosions evolved from very massive stars [PDF]

open access: yes, 2013
We investigate the possibility of a super-luminous Type Ic core-collapse supernovae producing a large amount of 56Ni. Very massive stars with a main-sequence mass larger than 100 Msun and a metallicity 0.001 < Z < 0.004 are expected to explode as super ...
Okita, Shinpei   +2 more
core   +2 more sources

Home - About - Disclaimer - Privacy