Development of the Geometric Structure of the Thermonuclear-Deflagration Front in Type Ia Supernovae

Details Development of the Geometric Structure of the Thermonuclear-Deflagration Front in Type Ia Supernovae Development of the Geometric Structure of the Thermonuclear-Deflagration Front in Type Ia Supernovae

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004arep...48..921p&link_type=abstract

Astronomy Reports, vol. 48, Issue 11, p.921-933

Astronomy and Astrophysics

Astronomy

2

Scientific paper

Three-dimensional hydrodynamical simulations of the development of a large-scale instability accompanying deflagration in the degenerate cores of rotating white dwarfs—progenitors of type-Ia supernovae—are presented. The numerical algorithm used is described in detail. An explicit, conservative, Godunov-type TVD difference scheme was employed for the computations. Large-scale convective processes are important as the deflagration front propagates. The supernova explosion is strongly nonspherically symmetric; a large-scale front structure emerges and propagates most rapidly along the rotational axis. The arrival of fresh thermonuclear fuel to the central region of the core can result in flares and the destruction of the core.

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