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L. J. Dursi (ASCI Flash Center), M. Zingale (University of California Santa Cruz), A. Caceres, A. C. Calder, F. X. Timmes, J. W. Truran, R. Rosner, D. Q. Lamb, E. Brown (ASCI Flash Center), P. Ricker (University of Illinois, Urbana-Champaign), B. Fryxell (ASCI Flash Center), K. Olson (NASA Goddard), K. Riley, A. Siegel, N. Vladimirova (ASCI Flash Center)
Type Ia supernovae are thought to begin with a deflagration phase, where burning occurs as a subsonic flame which accelerates and possibly undergoes a transition to a supersonic detonation. Both the acceleration and possible transition will depend on the microphysics of astrophysical flames, and their interaction with a turbulent flow in degenerate material. Here we present recent progress in studying the interactions of astrophysical flames and curvature and strain at the FLASH center; in particular, we discuss quantitative measurements of the effects of strain on burning rate of these flames, and implications for instability growth and quenching.
This work was supported by the DOE ASCI/Alliances program at the University of Chicago under grant No. B341495 and the Scientific through Advanced Computing (SciDAC) program of the DOE, grant number DE-FC02-01ER41176 to the Supernova Science Center/UCSC.
Bulletin of the American Astronomical Society,
35#2
© 2003. The American Astronomical Soceity.