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Nuclear physics with spherically symmetric supernova models

Liebendörfer, M. and Fischer, T. and Fröhlich, C. and Thielemann, F. -K. and Whitehouse, S.. (2008) Nuclear physics with spherically symmetric supernova models. Journal of physics. G, Nuclear physics, Vol. 35 , H. 1, 014056, 8 S..

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Official URL: http://edoc.unibas.ch/dok/A5253793

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Abstract

In recent years, Boltzmann neutrino transport led to a new and reliable generation of spherically symmetric models of stellar core-collapse and postbounce evolution. After the failure to prove the principles of the supernova explosion mechanism, these sophisticated models continue to illuminate the close interaction between high-density matter under extreme conditions and the transport of leptons and energy, in general, relativistically curved spacetime. We emphasize that very different input physics is likely to be relevant for the different evolutionary phases, e.g. nuclear structure for weak rates in collapse, the equation of state of bulk nuclear matter during bounce, multidimensional plasma dynamics in the postbounce evolution and neutrino cross sections in the explosive nucleosynthesis. We illustrate the complexity of the dynamics using preliminary 3D MHD high-resolution simulations based on parametrized deleptonization. With established spherically symmetric models we show that typical features of the different phases are reflected in the predicted neutrino signal and that a consistent neutrino flux leads to electron fractions larger than 0.5 in neutrino-driven supernova ejecta.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Astrophysik (Liebendörfer)
UniBasel Contributors:Liebendörfer, Matthias and Fischer, Tobias and Thielemann, Friedrich-Karl and Whitehouse, Stuart C
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:IOP
ISSN:0305-4616
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:22 Mar 2012 14:27
Deposited On:22 Mar 2012 13:56

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