AAS 205th Meeting, 9-13 January 2005
Session 71 Supernovae
Poster, Tuesday, January 11, 2005, 9:20am-6:30pm, Exhibit Hall

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[71.19] Two-Dimensional Radiation-Hydrodynamical Simulations of Core Collapse Supernova Progenitors for the Analysis of Convection Beneath Their Neutrinospheres

E. Raley (The University of Georgia, Florida Atlantic University), S. Bruenn (Florida Atlantic University)

We performed simulations using two-dimensional EVH-1(Enhanced Virginia Hydrodynamics One) hydrodynamics and radial ray MGFLD (multigroup flux-limited diffusion) neutrino transport code in order to simulate doubly diffusive instabilities below the neutrinospheres of core collapse supernova progenitors. The results of these simulations are compared with the results of our semi-analytical investigation (Bruenn, S. W., Raley, E. A., and Mezzacappa, A., ApJ in press), which indicate that below the neutrinosphere a new type of instability, we call Lepto-Entropy Fingers, is present and may play a role in the supernova mechanism.

This work was partially funded by a grant from the DOE Office of Science, Scientific Discovery though Advanced Computing Program.

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