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Context: Turbulent deflagrations of Chandrasekhar mass White Dwarfs arecommonly used to model Type Ia Supernova explosions. In this context, rapidrotation of the progenitor star is plausible but has so far been neglected.Aims: The aim of this work is to explore the influence of rapid rotation on thedeflagration scenario. Methods: We use three dimensional hydrodynamicalsimulations to model turbulent deflagrations ignited within a variety ofrapidly rotating CO WDs obeying rotation laws suggested by accretion studies.Results: We find that rotation has a significant impact on the explosion. Theflame develops a strong anisotropy with a preferred direction towards thestellar poles, leaving great amounts of unburnt matter along the equatorialplane. Conclusions: The large amount of unburnt matter is contrary to observedspectral features of SNe Ia. Thus, rapid rotation of the progenitor star andthe deflagration scenario are incompatible in order to explain SNe Ia.

Thermonuclear explosions of rapidly rotating white dwarfs - I. Deflagrations