The Effect of New Progenitor Stars on Supernovae Explosion

Details The Effect of New Progenitor Stars on Supernovae Explosion The Effect of New Progenitor Stars on Supernovae Explosion

Apr 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009acasn..50..152z&link_type=abstract

Acta Astronomica Sinica, vol. 50, no. 2, p. 152-160

Astronomy and Astrophysics

Astronomy

1

Stars: Supernovae: General, Shock Waves

Scientific paper

The presupernova star is one of the most important factors to the evolution of massive stars, especially to the core collapse and shock propagation. Woosley et al. improved their presupernova model base on new rates for beta decay, electron capture and mass loss. Utilizing these new presupernova models, type II supernova explosions are simulated with the code of ``WZYW89'' in case of stars with masses of 11-40M&sun;. Properties of the models, such as temperature, density, velocity of the shock, neutrino and electron to baryon ratio are discussed. The results show that there are different effect on the stellar core-collapse, shock propagation and explosion energy. For the explosive energy, the new presupernova models are favor of stronger explosion than before. Besides, a discussion about five definition of initial shock energy also is given, but a definition fit for all models with different mass is not obtained.

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