Results 21 to 30 of about 197,763 (248)
Gamma-ray Observations of Tycho’s Supernova Remnant with VERITAS and Fermi [PDF]
, 2017 High-energy gamma-ray emission from supernova remnants (SNRs) has provided a unique perspective for studies of Galactic cosmic-ray acceleration. Tycho’s SNR is a particularly good target because it is a young, type Ia SNR that has been well-studied over ...
S. Archambault +66 more
semanticscholar +1 more source
Comparing Neutron Star Kicks to Supernova Remnant Asymmetries [PDF]
, 2017 Supernova explosions are inherently asymmetric and can accelerate new-born neutron stars (NSs) to hundreds of km s−1. Two prevailing theories to explain NS kicks are ejecta asymmetries (e.g., conservation of momentum between NS and ejecta) and ...
T. Holland-Ashford +4 more
semanticscholar +1 more source
GALACTIC AND EXTRAGALACTIC SUPERNOVA REMNANTS AS SITES OF PARTICLE ACCELERATION
Acta Polytechnica, 2013 Supernova remnants, owing to their strong shock waves, are likely sources of Galactic cosmic rays. Studies of supernova remnants in X-rays and gamma rays provide us with new insights into the acceleration of particles to high energies. This paper reviews
Manami Sasaki
doaj +1 more source
Simulations of stripped core-collapse supernovae in close binaries [PDF]
, 2015 We perform smoothed-particle hydrodynamical simulations of the explosion of a helium star in a close binary system, and study the effects of the explosion on the companion star as well as the effect of the presence of the companion on the supernova ...
Rimoldi, Alex +2 more
core +3 more sources
A JWST Survey of the Supernova Remnant Cassiopeia A [PDF]
Astrophysical Journal LettersWe present initial results from a James Webb Space Telescope (JWST) survey of the youngest Galactic core-collapse supernova remnant, Cassiopeia A (Cas A), made up of NIRCam and MIRI imaging mosaics that map emission from the main shell, interior, and ...
D. Milisavljevic +46 more
semanticscholar +1 more source
The Supernova -- Supernova Remnant Connection [PDF]
, 2017 Many aspects of the progenitor systems, environments, and explosion dynamics of the various subtypes of supernovae are difficult to investigate at extragalactic distances where they are observed as unresolved sources.
D. Milisavljevic, R. Fesen
semanticscholar +1 more source
First Observations of SN 1604 (Kepler’s Supernova)
Universe, 2021 A supernova close enough to the Earth is a spectacular event: it can appear as a “new star” as luminous as Venus, or even more, visible for several days.
Alessandro de Angelis, Selenia Broccio
doaj +1 more source
Doppler Broadening and Line-of-sight Effects in Core-collapse Supernovae and Young Remnants
The Astrophysical Journal, 2023 The dynamics and spectral characteristics of supernova ejecta reveal details of the supernova energetics, explosive nucleosynthesis, and evolution of the progenitor.
Taylor Jacovich +6 more
doaj +1 more source
Probing r-Process Production of Nuclei Beyond Bi209 with Gamma Rays [PDF]
, 1999 We estimate gamma-ray fluxes due to the decay of nuclei beyond Bi209 from a supernova or a supernova remnant assuming that the r-process occurs in supernovae.
Qian, Y. -Z. +2 more
core +3 more sources
The supernova remnant W49B as seen with H.E.S.S. and Fermi-LAT [PDF]
, 2016 The supernova remnant (SNR) W49B originated from a core-collapse supernova that occurred between one and four thousand years ago, and subsequently evolved into a mixed-morphology remnant, which is interacting with molecular clouds (MC).
H. Collaboration +255 more
semanticscholar +1 more source