Results 81 to 90 of about 2,839 (226)

Binary Interaction Can Yield a Diversity of Circumstellar Media around Type II Supernova Progenitors

open access: yesThe Astrophysical Journal
Recent observations of supernovae (SNe) have indicated that a fraction of massive stars possess dense circumstellar medium (CSM) at the moment of their core collapses.
Tomoki Matsuoka, Ryo Sawada
doaj   +1 more source

Magnetorotational Explosions of Core-Collapse Supernovae

open access: yesActa Polytechnica CTU Proceedings, 2014
Core-collapse supernovae are accompanied by formation of neutron stars. The gravitation energy is transformed into the energy of the explosion, observed as SN II, SN Ib,c type supernovae.
Gennady S. Bisnovatyi-Kogan   +2 more
doaj   +1 more source

Models of Type II Supernova Explosions [PDF]

open access: yesHighlights of Astronomy, 1986
Present stellar evolution codes predict that stars with He-core masses above approximately 2 M⊙, corresponding to main sequence masses of at least 8 M⊙ burn carbon non-violently. After hydrostatic core carbon burning all those stars contain O-Ne-Mg cores but their further evolution is strongly dependent on the stellar entropy and thus on the main ...
openaire   +1 more source

Early and Extensive Ultraviolet through Near Infrared Observations of the Intermediate-luminosity Type Iax Supernovae 2024pxl

open access: yesThe Astrophysical Journal
We present ultraviolet (UV) through near-infrared (NIR) photometric and spectroscopic observations of the nearby SN 2024pxl, the third Type Ia supernova (SN Ia) in NGC 6384.
W. B. Hoogendam   +14 more
doaj   +1 more source

Type II supernovae at high redshifts

open access: yes, 1999
A hydro code coupled with radiation transfer was applied to produce monochromatic light curves of two models of type II supernovae (SN II) simulating SN II-P and SN IIb (SN 1993J-like). We then used these template light curves to evaluate the possibility of detecting SNe II at different redshifts.
Chugai, Nikolai   +2 more
openaire   +2 more sources

SN 2021wvw: A Core-collapse Supernova at the Subluminous, Slower, and Shorter End of Type IIPs

open access: yesThe Astrophysical Journal
We present detailed multiband photometric and spectroscopic observations and analysis of a rare core-collapse supernova, SN 2021wvw, that includes photometric evolution up to 250 days and spectroscopic coverage up to 100 days postexplosion.
Rishabh Singh Teja   +6 more
doaj   +1 more source

Spectral Modeling of Type II Supernovae [PDF]

open access: yesAIP Conference Proceedings, 2007
Using models of the SN~IIP 2005cs, we show that detailed spectral analysis can be used to determine reddening and abundances.
openaire   +2 more sources

Neutrinos from Type-II Supernovae

open access: yes
Abstract In our work we investigate the stellar surface fluxes of different neutrino flavors, both with and without matter effects, while aiming to consider the varying density of the progenitor star to reveal intriguing variations in their behavior. By examining both normal and inverted neutrino mass hierarchies in studies of neutrino fluxes,
Leen Binchi, Amine Ahriche
openaire   +1 more source

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