Stellar explosions, instabilities, and turbulence
- University of Michigan, 2455 Hayward St., Ann Arbor, Michigan 48109 (United States)
- Lawrence Livermore National Laboratory, 7500 East Ave., Livermore, California 94550 (United States)
- Faculty of Mathematics, University of Vienna, Nordbergstr. 15, A-1090 Vienna (Austria)
- School of Computational Science, Florida State University, DSL 443, Tallahassee, Florida 32306 (United States)
It has become very clear that the evolution of structure during supernovae is centrally dependent on the pre-existing structure in the star. Modeling of the pre-existing structure has advanced significantly, leading to improved understanding and to a physically based assessment of the structure that will be present when a star explodes. It remains an open question whether low-mode asymmetries in the explosion process can produce the observed effects or whether the explosion mechanism somehow produces jets of material. In any event, the workhorse processes that produce structure in an exploding star are blast-wave driven instabilities. Laboratory experiments have explored these blast-wave-driven instabilities and specifically their dependence on initial conditions. Theoretical work has shown that the relative importance of Richtmyer-Meshkov and Rayleigh-Taylor instabilities varies with the initial conditions and does so in ways that can make sense of a range of astrophysical observations.
- OSTI ID:
- 21276968
- Journal Information:
- Physics of Plasmas, Vol. 16, Issue 4; Other Information: DOI: 10.1063/1.3101816; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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