INSTABILITY OF THE DETONATION-WAVE IN A THERMONUCLEAR SUPERNOVA MODEL(CORRECTED VERSION OF NU154)

Instability of the detonation wave in the degenerate core of a star is studied. It appears, that nearly the whole core is burned up in an un stable detonation regime. The kinetics of thermonuclear burning in the se conditions probably leads to a chemical composition of the supernov a remnant, differing from that obtained for the case of stationary pro pagation of the wave. It is necessary, therefore, to develop mathemati cal supernova models with the burning front defined according to the m odel by Zeldovich-von Neuman-Dering. Furthermore, the existence of an unstable detonation regime suggests that the detonation may come to a half.