Nucleosynthesis in neutrino-driven supernovae
نویسندگان
چکیده
منابع مشابه
Nucleosynthesis in Neutrino-Driven Supernovae
Core collapse supernovae are the leading actor in the story of the cosmic origin of the chemical elements. Existing models, which generally assume spherical symmetry and parameterize the explosion, have been able to broadly replicate the observed elemental pattern. However, inclusion of neutrino interactions produces noticeable improvement in the composition of the ejecta when compared to obser...
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Baryonic outflows from proto-neutron stars formed in core-collapse supernova explosions are one of the possible scenarios for the production of heavy elements via the r-process. If the ejected matter reaches supersonic velocities the outflow is known as neutrino-driven wind. We have studied the long-time evolution of proto-neutron stars with oneand two-dimensional hydrodynamical simulations and...
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In this paper we note that for neutrino mass squared differences in the range 10−4−10−1eV 2, vacuum neutrino oscillations can take place between the neutrinosphere and the weak freeze-out radius in a type II supernova. Requiring that such oscillations are consistent with the r-process nucleosynthesis from supernovae one can constrain the mixing of νe with νμ ( or ντ ) down to 10 −4 eV 2. We fir...
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Two recent issues realted to nucleosynthesis in early proton-rich neutrino winds are investigated. In the first part we investigate the effect of nuclear physics uncertainties on the synthesis of 92Mo and 94Mo. Based on recent experimental results, we find that the proton rich winds of the model investigated here can not be the only source of the solar abundance of 92Mo and 94Mo. In the second ...
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ژورنال
عنوان ژورنال: New Astronomy Reviews
سال: 2006
ISSN: 1387-6473
DOI: 10.1016/j.newar.2006.06.003