Results 51 to 60 of about 32,797 (265)
Essential ingredients in core-collapse supernovae
Carrying 1044 joules of kinetic energy and a rich mix of newly synthesized atomic nuclei, core-collapse supernovae are the preeminent foundries of the nuclear species which make up our solar system and ourselves.
W. Raphael Hix +9 more
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Hydrogen-Rich Core-Collapse Supernovae [PDF]
Hydrogen-rich core collapse supernovae, known as "Type II" supernovae, are the most common type of stellar explosion realized in nature. They are defined by the presence of prominent hydrogen lines in their spectra. Type II supernovae are observed only in star-forming galaxies, and several events have been directly linked to massive star progenitors ...
openaire +2 more sources
Previous numerical simulations of double-peaked Type IIb supernova (SN IIb) light curves have demonstrated that the radius and mass of the hydrogen-rich envelope of the progenitor star can significantly influence the brightness and timescale of the early-
Seong Hyun Park +2 more
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Non-spherical core collapse supernovae and nucleosynthesis [PDF]
Motivated by observations of supernova SN 1987A, various authors have simulated Rayleigh-Taylor (RT) instabilities in the envelopes of core collapse supernovae (for a review, see Mueller 1998).
Kifonidis, K., Mueller, E., Plewa, T.
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Understanding Core-Collapse Supernovae
Our understanding of core-collapse supernovae continues to improve as better microphysics is included in increasingly realistic neutrino-radiationhydrodynamic simulations. Recent multi-dimensional models with spectral neutrino transport, which slowly develop successful explosions for a range of progenitors between 12 and 25 solar mass, have motivated ...
W.R. Hix +8 more
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Topics in core-collapse supernova-theory [PDF]
10 pages, 2 color figures, to be published in the proceedings of ``3-D Signatures in Stellar Explosions: A Workshop honoring J.
Burrows, Adam +2 more
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The Type Ibn Supernova 2019kbj: Indications for Diversity in Type Ibn Supernova Progenitors
Type Ibn supernovae (SNe) are a rare class of stellar explosions whose progenitor systems are not yet well determined. We present and analyze observations of the Type Ibn SN 2019kbj, and model its light curve in order to constrain its progenitor and ...
Tom Ben-Ami +11 more
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The Cassiopeia A supernova remnant has a complex structure, manifesting the multidimensional nature of core-collapse supernova explosions. To further understand this, we carried out near-infrared multiobject spectroscopy on the ejecta knots located in ...
Bon-Chul Koo +3 more
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Supernovae in the nuclear regions of starburst galaxies [PDF]
The feasibility of using near-infrared observations to discover supernovae in the nuclear and circumnuclear regions of nearby starburst galaxies is investigated. We provide updated estimates of the intrinsic core-collapse supernova rates in these regions.
Mattila, S., Meikle, W. P. S.
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Presolar graphite grains carry the isotopic signatures of their parent stars. A significant fraction of presolar graphites show isotopic abundance anomalies relative to solar for elements such as O, Si, Mg, and Ca, which are compatible with ...
Marco Pignatari +10 more
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