Eduardo Bravo and Domingo García-Senz 2006 ApJ 642 L157 doi:10.1086/504713
Beyond the Bubble Catastrophe of Type Ia Supernovae: Pulsating Reverse Detonation Models
FREEEduardo Bravo1,2 and Domingo García-Senz1,2
Show affiliationsWe describe a mechanism by which a failed deflagration of a Chandrasekhar-mass carbon-oxygen white dwarf can turn into a successful thermonuclear supernova explosion, without invoking an ad hoc high-density deflagration-detonation transition. Following a pulsating phase, an accretion shock develops above a core of ~1 M
composed of carbon and oxygen, inducing a converging detonation. A three-dimensional simulation of the explosion produced a kinetic energy of 1.05 × 1051 ergs and 0.70 M of 56Ni, ejecting scarcely 0.01 M of C-O moving at low velocities. The mechanism works under quite general conditions and is flexible enough to account for the diversity of normal Type Ia supernovae. In given conditions the detonation might not occur, which would reflect in peculiar signatures in the gamma-ray and UV wavelengths.
- Subject headings
hydrodynamics; nuclear reactions, nucleosynthesis, abundances; supernovae: general; ultraviolet: stars
- Dates
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Issue 2 (2006 May 10)
Received 2006 January 3, accepted for publication 2006 March 30
Published 2006 April 26
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Beyond the Bubble Catastrophe of Type Ia Supernovae: Pulsating Reverse Detonation Models
Eduardo Bravo and Domingo García-Senz 2006 ApJ 642 L157
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