Results 111 to 120 of about 5,737 (225)
The Astrophysical JournalCore-collapse supernovae are explosions of massive stars. While most massive stars end as iron-core-collapse supernovae, less massive stars are expected to explode as electron-capture supernovae (ECSNe), defining the low-mass boundary of core-collapse ...
Masato Sato +7 more
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The Progenitors of Recent Core-Collapse Supernovae [PDF]
, 2009 We present the results of our analysis of Hubble Space Telescope (HST) and deep ground-based images to isolate the massive progenitor stars of the two recent core-collapse supernovae 2008 bk and 2008 cn.
Li, W. +3 more
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The innermost zones of core collapse supernovae [PDF]
, 2005 We achieve successful explosions (of otherwise non-explosive models) by enhancing the neutrino luminosity in two different ways. The resulting electron fraction Y_e in the innermost ejecta reaches or in some zones even exceeds 0.5.
Hauser, P. +4 more
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Optical observations of core-collapse supernovae
AIP Conference Proceedings, 2001 I present an overview of optical observations (mostly spectra) of Type II, Ib, and Ic supernovae (SNe). SNe II are defined by the presence of hydrogen, and exhibit a very wide variety of properties. SNe II-L tend to show evidence of late-time interaction with circumstellar material.
openaire +2 more sources
Understanding Core-Collapse Supernovae
Nuclear Physics A, 2010 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
openaire +2 more sources
Probing the Shock Breakout Signal of SN 2024ggi from the Transformation of Early Flash Spectroscopy
The Astrophysical Journal LettersWe present early-time, hour-to-day cadence spectroscopy of the nearby Type II supernova (SN II) 2024ggi, which was discovered at a phase when the SN shock had just emerged from the red supergiant (RSG) progenitor star.
Jujia Zhang +13 more
doaj +1 more source
The Progenitors of Recent Core-Collapse Supernovae [PDF]
, 2010 We present the results of our analysis of Hubble Space Telescope (HST) and deep ground-based images to isolate the massive progenitor stars of the two recent core-collapse supernovae 2008bk and 2008cn.
Elias-Rosa, Nancy
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Discovery and Extensive Follow-up of SN 2024ggi, a Nearby Type IIP Supernova in NGC 3621
The Astrophysical JournalWe present the discovery and early observations of the nearby Type II supernova (SN) 2024ggi in NGC 3621 at 6.64 ± 0.3 Mpc. The SN was caught $5.{8}_{-2.9}^{+1.9}$ hr after its explosion by the ATLAS survey.
Ting-Wan Chen +49 more
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Rise-times of Core-Collapse Supernovae [PDF]
A supernova is the explosive end of a star. If the star is a white dwarf in a binary system, the supernova will be a thermonuclear or type Ia supernova.
Rikala, Maija
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