Convection above the neutrinosphere in type II supernovae
Convection above the neutrinosphere in type II supernovae
复制标题
II型超新星中微子层上方的对流
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
R. Mayle
中科院分区：
文献类型：
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作者：
D. S. Miller;James R. Wilson;R. Mayle
我们已经完成了几个二维计算的II型超新星爆炸，通过第一个0.4秒过去的反弹，检查对流的冲击波的影响。我们已经使用二维代码来计算对流速度，以与Mayle和Wilson（MW）一维代码（包括更多的相关物理）进行比较，并发现M&W代码使用二维对流速度不会产生爆炸。我们发现，对流发展指数的增长率为1000 s-1。如果初始扰动足够大，这种不稳定性增长到足以发展出显著的对流速度。然后对流涡流将能量传递给激波
We have completed several two-dimensional calculations of a Type II supernova explosion through the first 0.4 s past bounce to examine the effects of convection on the shock. We have used the two-dimensional code to compute a convective velocity to compare with the Mayle and Wilson (MW) one-dimensional code (which includes more of the relevant physics) and find that the M&W code does not produce an explosion using the two-dimensional convective velocity. We find that convection develops exponentially with a growth rate of ∼100 s -1 . If the initial perturbation is sufficient, this instability grows enough to develop significant convective velocities. The convective eddies then deliver energy to the shock