首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Double detonations at the core–envelope boundary in Type Ia supernovae
Authors:D J R Wiggins  G J Sharpe  & S A E G Falle
Institution:Department of Applied Mathematics, The University of Leeds, Leeds LS2 9JT
Abstract:An off-centre detonation propagating near the interface between a C–O core and a He envelope in a Type Ia supernova explosion is modelled as a steady two-dimensional similarity solution at a plane interface. We assume that in both regions the energy release occurs in an infinitely thin detonation, which produces material in nuclear statistical equilibrium (NSE) in He and in nuclear statistical quasi-equilibrium in C–O. An α-network is then used to determine the effect of the associated rarefaction wave in the C–O on the final abundance of intermediate elements. We find that, although there is a significant effect, the rarefaction is not strong enough to quench the reactions and prevent the C–O from burning to NSE.
Keywords:nuclear reactions  nucleosynthesis  abundances  shock waves  supernovae: general
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号