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Leung, S.-C.; Chu, M.-C.; Lin, L.-M.
Astrophysical journal/The Astrophysical journal, 10/2015, Volume: 812, Issue: 2Journal Article
ABSTRACT We perform two-dimensional hydrodynamic simulations for the thermonuclear explosion of Chandrasekhar-mass white dwarfs with dark matter (DM) cores in Newtonian gravity. We include a 19-isotope nuclear reaction network and make use of the pure turbulent deflagration model as the explosion mechanism in our simulations. Our numerical results show that the general properties of the explosion depend quite sensitively on the mass of the DM core M DM: a larger M DM generally leads to a weaker explosion and a lower mass of synthesized iron-peaked elements. In particular, the total mass of 56 Ni produced can drop from about 0.3 to 0.03 M as M DM increases from 0.01 to 0.03 M . We have also constructed the bolometric light curves obtained from our simulations and found that our results match well with the observational data of sub-luminous Type Ia supernovae.
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