出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The explosion of a helium layer accreted on top of a white dwarf, leading to the subsequent
explosion of the star (while the accreting dwarf is still below the Chandrasekhar mass limit) is
an alternative model for some subluminous Type Ia supernovae explosions. In this
communication we present two preliminary hydrodynamical simulations concerning these socalled
Sub-Chandrasekhar mass models for Type Ia supernovae, calculated in two dimensions.
In the first calculation we have assumed one single detonation travelling through the helium
layer which, after a while, induces the detonation of the carbon layer at the antipodes of the
original ignition point. In the second case we assumed the prompt detonation of the carbon just
beneath the ignition point. A comparison between these two models is presented.
