Multi-spot ignition in type Ia supernova models

Abstract

We present a systematic survey of the capabilities of type Ia supernova explosion models starting from a number of flame seeds distributed around the center of the white dwarf star. To this end we greatly improved the resolution of the numerical simulations in the initial stages. This novel numerical approach facilitates a detailed study of multi-spot ignition scenarios with up to hundreds of ignition sparks. Two-dimensional simulations are shown to be inappropriate to study the effects of initial flame configurations. Based on a set of three-dimensional models, we conclude that multi-spot ignition scenarios may improve type Ia supernova models towards better agreement with observations. The achievable effect reaches a maximum at a limited number of flame ignition kernels as shown by the numerical models and corroborated by a simple dimensional analysis.

14 pages, 12 figures with reduced resolution to meet astro-ph file size restriction, full-resolution version available from http://www.mpa-garching.mpg.de/~fritz/publications/astro-ph/multispot.pdf submitted to A&A

References in corpus (10)

• Thermonuclear Supernovae: Simulations of the Deflagration Stage and Their Implications
• Nucleosynthesis in multi-dimensional SNIa explosions
• Abundance stratification in Type Ia supernovae - I. The case of SN 2002bo
• Carbon Ignition in Type Ia Supernovae: An Analytic Model
• Full-star Type Ia supernova explosion models
• Three-dimensional modeling of Type Ia supernovae - The power of late time spectra
• Following multi-dimensional Type Ia supernova explosion models to homologous expansion
• On the Sensitivity of Deflagrations in Chandrasekhar Mass White Dwarf to Initial Conditions
• Type Ia Supernova models arising from different distributions of igniting points
• The distributed burning regime in Type Ia supernova models

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