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| Paper: |
Type Ia Supernovae and the DD Scenario |
| Volume: |
453, Advances in Computational Astrophysics: Methods, Tools, and Outcome |
| Page: |
99 |
| Authors: |
Isern, J.; García–Berro, E.; Lorén–Aguilar, P. |
| Abstract: |
Type Ia supernovae are thought to be the outcome of the thermonuclear
explosion of a white dwarf in a close binary system. Two possible
scenarios, not necessarily incompatible, have been advanced. One
assumes a white dwarf that accretes matter from a nondegenerate
companion (the single degenerate scenario), the other assumes two
white dwarfs that merge as a consequence of the emission of
gravitational waves (the double degenerate scenario). The delay time
distribution of star formation bursts strongly suggests that the DD
scenario should be responsible of the late time explosions, but this
contradicts the common wisdom that the outcome of the merging of two
white dwarfs is an accretion induced collapse to a neutron star. In
this contribution we review some of the most controversial issues of
this problem. |
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