Multi-Dimensional Simulations of Core-Collapse Supernovae

核心塌陷超新星的多维模拟

• 批准号: 0504947
• 负责人: Adam Burrows
• 金额: --
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2009-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0504947&HistoricalAwards=false
• 关键词: Multi; Dimensional; Simulations; Core; Collapse

AST-0504947Burrows, AdamUniversity of ArizonaMulti-Dimensional Simulations of Core-Collapse SupernovaeABSTRACTRecently developed fully 2D multi-group, multi-angle radiation/hydrodynamics codeswill be used to investigate the roles of progenitor rotation, aspherical neutrino emissions,hydrodynamic instabilities, and initial mass on neutrino driven mechanisms of corecollapse supernovae. The need for this work is motivated by the significant uncertaintiesin the process by which such supernovae explode (e.g., how is the stalled shockrevived?). Special attention will be paid to the role of rotation and anisotropic neutrinoheating on the viability of the supernova explosion. Beyond this, several other aspectswill also be explored including: resulting iron distributions, the degree of top-bottomasymmetry, different treatments/coding of the underlying physics, neutrino andgravitational wave signatures, and pulsar kick mechanisms. The work here will directlycontribute to the training of two graduate students, as well as improve our understandingof these important and complex events.

AST-0504947 Burrows，AdamUniversity of Arizona核心坍缩超新星的多维模拟摘要最近开发的全二维多群、多角度辐射/流体动力学程序将用于研究祖先旋转、非球面中微子发射、流体动力学不稳定性和初始质量对中微子驱动的坍缩超新星机制的作用。这项工作的需要是由这种超新星爆炸过程中的重大不确定性所激发的（例如，如何让停滞的休克复苏？）将特别注意旋转和各向异性中微子加热对超新星爆炸的可行性的作用。除此之外，还将探索其他几个方面，包括：由此产生的铁分布，顶部-底部不对称的程度，基础物理的不同处理/编码，中微子和引力波签名，以及脉冲星反冲机制。这里的工作将直接有助于两名研究生的培训，以及提高我们对这些重要而复杂的事件的理解。