Details

Autor(en) / Beteiligte

• Gamezo, Vadim N.
• Khokhlov, Alexei M.
• Oran, Elaine S.
• Chtchelkanova, Almadena Y.
• Rosenberg, Robert O.

Titel

Thermonuclear Supernovae: Simulations of the Deflagration Stage and Their Implications

Ist Teil von

• Science (American Association for the Advancement of Science), 2003-01, Vol.299 (5603), p.77-81

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2003

Quelle

Science Online科学在线

Beschreibungen/Notizen

• Large-scale, three-dimensional numerical simulations of the deflagration stage of a thermonuclear supernova explosion show the formation and evolution of a highly convoluted turbulent flame in the gravitational field of an expanding carbon-oxygen white dwarf. The flame dynamics are dominated by the gravity-induced Rayleigh-Taylor instability that controls the burning rate. The thermonuclear deflagration releases enough energy to produce a healthy explosion. The turbulent flame, however, leaves large amounts of unbumed and partially burned material near the star center, whereas observations that imply these materials are present only in outer layers. This disagreement could be resolved if the deflagration triggers a detonation.