Effect of electron screening on the collapsing process of core-collapse supernovae

被引：4

作者：

Liu, Men-Quan ^{[1
,2
]}

Yuan, Ye-Fei ^{[1
]}

Zhang, Jie ^{[2
,3
]}

机构：

[1] Univ Sci & Technol China, Key Lab Res Galaxies & Cosmol, Chinese Acad Sci, Hefei 230026, Peoples R China

[2] China W Normal Univ, Inst Theoret Phys, Nanchong 637002, Peoples R China

[3] Chongqing Univ, Inst Struct & Funct, Chongqing 400044, Peoples R China

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2009年 / 400卷 / 02期

关键词：

nuclear reactions; nucleosynthesis; abundances; stars: evolution; supernovae: general; WEAK INTERACTION RATES; INTERMEDIATE-MASS NUCLEI; EQUATION-OF-STATE; CAPTURE RATES; BETA-DECAY; STELLAR; NUCLEOSYNTHESIS; STARS; EVOLUTION; DENSITY;

D O I：

10.1111/j.1365-2966.2009.15487.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

By using an average heavy nuclei model, the effects of the electron screening on electron capture (EC) in core-collapse supernovae are investigated. A one-dimension code based on the Ws15M(circle dot) progenitor model is utilized to test the effects of electron screening during the collapsing process. The results show that, at high densities, the effects of electron screening on EC become significant. During the collapsing stage, the EC rate is decreased, the collapse time-scale is prolonged and the leakage of the neutrino energy is increased. These effects lead to an appreciable decrease in the initial energy of the bounce shock wave. The effects of electron screening in the other progenitor models are also discussed.

引用

页码：815 / 819

页数：5

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