A One- and Multidimensional Study of Core Collapse Supernovae

布鲁恩博士的研究计划解决了超新星核心塌缩和爆炸理论模型中的几个悬而未决的问题。大质量恒星的核心坍塌被认为是通过中微子释放和传输能量及其对冲击波传播的影响而导致超新星爆炸。布鲁恩博士的研究计划有三个目标：1)对以中微子为主的区域的流体不稳定性进行详细的半解析研究，该区域控制着坍塌后超新星中冲击波的行为；2)对冲击波进行二维和三维流体力学计算，特别注意对中微子输运进行建模；以及3)探索核心塌缩超新星的新爆炸机制，这是由于强磁场减少了中微子的不透明度，并增加了冲击波背后的热量。这项研究计划的每一个方面都建立在PI和合作者以前改进半解析描述和对爆炸机制的微观物理模型进行数值模拟方面所做的努力的基础上。***

Bruenn, Steven AST 96-18423 Dr. Bruenn's research program addresses several outstanding issues in the theoretical modeling of core collapse and explosion of supernovae. The collapse of the cores of massive stars is thought to lead to the supernovae explosion through the release and transport of energy through neutrinos and their influence on the propagation of shocks. Dr. Bruenn's research plan has three objectives : 1) to carry out a detailed, semi-analytical study of fluid instabilities in the neutrino- dominated region that controls the behavior of the shock in post-collapse supernovae, 2) to perform 2- and 3-dimensional hydrodynamic calculations of the shock, with particular attention to modeling the neutrino transport, and 3) to explore a new explosion mechanism for core collapse supernovae, which results from strong magnetic fields reducing neutrino opacities and increasing heating behind the shock. Each aspect of this research plan builds on previous efforts by the PI and collaborators in improving semi-analytical descriptions and the implementation of numerical simulations modeling the microphysics of the explosion mechanism. ***