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Title: DARK MATTER ADMIXED TYPE Ia SUPERNOVAE

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 {sub DM}: a larger M {sub DM} generally leads to a weaker explosion and a lower mass of synthesized iron-peaked elements. In particular, the total mass of produced can drop from about 0.3 to 0.03 M {sub ⊙} as M {sub DM} increases from 0.01 to 0.03 M {sub ⊙}. 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.
Authors:
; ;  [1]
  1. Department of Physics and Institute of Theoretical Physics, The Chinese University of Hong Kong, Hong Kong S.A.R. (China)
Publication Date:
OSTI Identifier:
22518777
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 812; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BOLOMETERS; COMPUTERIZED SIMULATION; GRAVITATION; HYDRODYNAMICS; IRON; MASS; NONLUMINOUS MATTER; NUCLEAR REACTIONS; SUPERNOVAE; THERMONUCLEAR EXPLOSIONS; TWO-DIMENSIONAL SYSTEMS; VISIBLE RADIATION; WHITE DWARF STARS