Capturing the Fire: Flame Energetics and Neutronizaton for Type Ia Supernova Simulations

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dc.creatorCalder, A. C.
dc.creatorTownsley, D. M.
dc.creatorSeitenzahl, I. R.
dc.creatorPeng, F.
dc.creatorMesser, O. E. B.
dc.creatorVladimirova, N.
dc.creatorBrown, E. F.
dc.creatorTruran, J. W.
dc.creatorLamb, D. Q.
dc.date2006-11-01
dc.date.accessioned2026-07-07T11:20:37Z
dc.date.available2026-07-07T11:20:37Z
dc.descriptionWe develop and calibrate a realistic model flame for hydrodynamical simulations of deflagrations in white dwarf (Type Ia) supernovae. Our flame model builds on the advection-diffusion-reaction model of Khokhlov and includes electron screening and Coulomb corrections to the equation of state in a self-consistent way. We calibrate this model flame--its energetics and timescales for energy release and neutronization--with self-heating reaction network calculations that include both these Coulomb effects and up-to-date weak interactions. The burned material evolves post-flame due to both weak interactions and hydrodynamic changes in density and temperature. We develop a scheme to follow the evolution, including neutronization, of the NSE state subsequent to the passage of the flame front. As a result, our model flame is suitable for deflagration simulations over a wide range of initial central densities and can track the temperature and electron fraction of the burned material through the explosion and into the expansion of the ejecta.
dc.description21 pages, 24 figures, to appear in ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0611009
dc.identifierhttp://arxiv.org/abs/astro-ph/0611009
dc.identifierAstrophys.J.656:313-332,2007
dc.identifierdoi:10.1086/510709
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194017
dc.subjectAstrophysics
dc.titleCapturing the Fire: Flame Energetics and Neutronizaton for Type Ia Supernova Simulations
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