期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
活动星系核在光学波段的光度及光谱斜率变化
1
作者 濮兴庭 《南京师大学报(自然科学版)》 CAS CSCD 北大核心 2005年第2期46-50,共5页
利用盘不稳定模型和星爆模型,模拟活动星系核在光学B、V波段的光变,分析光变时光谱斜率的变化情况,并将模拟的结果和观测进行比较,结果表明,这两种模型是定性解释活动星系核光学波段光度、光谱变化的合理模型.
关键词 光变 AGN 盘不稳定模型 星爆模型 B、V波段
下载PDF
Matter Effects on Neutrino Oscillations in Different Supernova Models
2
作者 徐晶 胡立军 +2 位作者 李瑞成 郭新恒 杨炳麟 《Communications in Theoretical Physics》 SCIE CAS CSCD 2016年第4期506-516,共11页
In recent years,with the development of simulations about supernova explosion,we have a better understanding about the density profiles and the shock waves in supernovae than before.There might be a reverse shock wave... In recent years,with the development of simulations about supernova explosion,we have a better understanding about the density profiles and the shock waves in supernovae than before.There might be a reverse shock wave,another sudden change of density except the forward shock wave,or even no shock wave,emerging in the supernova.Instead of using the expression of the crossing probability at the high resonance,PH,we have studied the matter effects on neutrino oscillations in different supernova models.In detail,we have calculated the survival probability of νe(P_s)and the conversion probability of ν_x(P_c) in the Schrodinger equation within a simplified two-flavor framework for a certain case,in which the neutrino transfers through the supernova matter from an initial flavor eigenstate located at the core of the supernova.Our calculations was based on the data of density in three different supernova models obtained from simulations.In our work,we do not steepen the density gradient around the border of the shock wave,which differs to what was done in most of the other simulations.It is found that the mass and the density distribution of the supernova do make a difference on the behavior of P_s and P_c.With the results of P_s and P_c,we can estimate the number of νe(and ν_x) remained in the beam after they go through the matter in the supernova. 展开更多
关键词 neutrino oscillations matter effects shock wave effects supernova models
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部