منابع مشابه
Non - spherical core collapse supernovae
Two-dimensional simulations of strongly anisotropic supernova explosions of a nonrotating 15 M ⊙ blue supergiant progenitor are presented, which follow the hydrodynamic evolution from times shortly after shock formation until hours later. It is shown that explosions which around the time of shock revival are dominated by low-order unstable modes (i.e. by a superposition of the l = 2 and l = 1 m...
متن کاملNon-spherical core collapse supernovae and nucleosynthesis
Motivated by observations of supernova SN1987A, various authors have simulated Rayleigh–Taylor (RT) instabilities in the envelopes of core collapse supernovae (for a review, see [1]). The non-radial motion found in these simulations qualitatively agreed with observations in SN1987A, but failed to explain the extent of mixing of newly synthesized Ni quantitatively. Here we present results of a 2...
متن کاملUnderstanding Core-Collapse Supernovae
At the University of Arizona, we have a major effort to study core-collapse supernovae, neutrino opacities and transfer, multi-dimensional radiation hydrodynamics, pulsar kicks, and gravitational radiation from supernovae. We have developed a precision 1D (spherical) multigroup implicit Boltzmann solver, SESAME 1 [1, 2], using the Feautrier technique, with the tangent-ray method to achieve exce...
متن کاملProgenitors of core-collapse supernovae
Knowledge of the progenitors of core-collapse supernovae is a fundamental component in understanding the explosions. The recent progress in finding such stars is reviewed. The minimum initial mass that can produce a supernova has converged to 8± 1M⊙, from direct detections of red supergiant progenitors of II-P SNe and the most massive white dwarf progenitors, although this value is model depend...
متن کاملNucleosynthesis in Core Collapse Supernovae
We present the basic properties of the yields of our latest set of presupernova evolution and explosive nucleosynthesis of massive stars in the range between 11 and 120 M having solar and zero metallicity.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20054512