The response of model and astrophysical thermonuclear flames to curvature and stretch

L. J. Dursi, M. Zingale, A. C. Calder, B. Fryxell, F. X. Timmes, N. Vladimirova, R. Rosner, A. Caceres, D. Q. Lamb, K. Olson, P. M. Ricker, K. Riley, A. Siegel, J. W. Truran

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Critically understanding the standard candle-like behavior of Type Ia supernovae requires understanding their explosion mechanism. One family of models for Type Ia supernovae begins with a deflagration in a carbon-oxygen white dwarf that greatly accelerates through wrinkling and flame instabilities. While the planar speed and behavior of astrophysically relevant flames is increasingly well understood, more complex behavior, such as the flame'S response to stretch and curvature, has not been extensively explored in the astrophysical literature; this behavior can greatly enhance or suppress instabilities and local flame-wrinkling, which in turn can increase or decrease the bulk burning rate. In this paper, we explore the effects of curvature on both nuclear flames and simpler model flames to understand the effect of curvature on the flame structure and speed.

Original languageEnglish (US)
Pages (from-to)955-979
Number of pages25
JournalAstrophysical Journal
Volume595
Issue number2 I
DOIs
StatePublished - Oct 1 2003

Keywords

  • Conduction
  • Hydrodynamics
  • Methods: numerical
  • Nuclear reactions, nucleosynthesis, abundances
  • Supernovae: general
  • White dwarfs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Dursi, L. J., Zingale, M., Calder, A. C., Fryxell, B., Timmes, F. X., Vladimirova, N., Rosner, R., Caceres, A., Lamb, D. Q., Olson, K., Ricker, P. M., Riley, K., Siegel, A., & Truran, J. W. (2003). The response of model and astrophysical thermonuclear flames to curvature and stretch. Astrophysical Journal, 595(2 I), 955-979. https://doi.org/10.1086/377433