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Capturing the Fire: Flame Energetics and Neutronization For Type Ia Supernova Simulations

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dc.contributor.authorCalder, A. C.
dc.contributor.authorTownsley, D. M.
dc.contributor.authorSeitenzahl, I. R.
dc.contributor.authorPeng, F.
dc.contributor.authorMesser, O. E. B.
dc.contributor.authorVladimirova, N.
dc.contributor.authorBrown, E. F.
dc.contributor.authorTruran, J. W.
dc.contributor.authorLamb, D. Q.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date2007-02-10
dc.date.accessioned2018-08-22T20:02:09Z
dc.date.available2018-08-22T20:02:09Z
dc.date.issued2007-02-10
dc.description.abstractWe develop and calibrate a realistic model flame for hydrodynamic 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 postflame 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.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationCalder, A., et al. (2007): Capturing the Fire: Flame Energetics and Neutronization for Type Ia Supernova Simulations. The Astrophysical Journal, 656(1).
dc.identifier.urihttp://ir.ua.edu/handle/123456789/3741
dc.subjecthydrodynamics
dc.subjectnuclear reactions
dc.subjectnucleosynthesis
dc.subjectsupernovae
dc.subjectwhite dwarfs
dc.titleCapturing the Fire: Flame Energetics and Neutronization For Type Ia Supernova Simulationsen_US
dc.typetext

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