He-accreting WDs as SNe Ia Progenitors
Luciano Piersanti, Amedeo Tornambe', Lev Yungelson, Oscar Straniero
TL;DR
This paper studies how helium-accreting white dwarfs respond thermally and concludes that this pathway is unlikely to produce most normal Type Ia supernovae.
Contribution
It provides new insights into the thermal behavior of helium-accreting white dwarfs and challenges the helium channel as a primary progenitor for typical SNe Ia.
Findings
He-accreting WDs unlikely to produce most normal SNe Ia
Thermal response analysis of CO white dwarfs with helium accretion
Constraints on progenitor models for Type Ia supernovae
Abstract
We investigate the thermal response of CO WDs accreting He-rich matter directly from their companions in binary systems. Our results suggest that the He-channel cannot provide progenitors for majority of "normal" SNe Ia.
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