Central Engine Models for Extreme Core-Collapse Supernovae and Long Gamma-Ray Bursts

极端核心塌陷超新星和长伽马射线爆发的中央发动机模型

• 批准号: 1212170
• 负责人: Christian Ott
• 金额: $ 38.29万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-15 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1212170&HistoricalAwards=false
• 关键词: Central; Engine; Models; Extreme; Core

This award will support a comprehensive theoretical investigation into core collapse and the resulting supernovae explosions of massive stars. The project will focus on full-star simulations in three dimensions of compact progenitors of certain classes of supernovae and long gamma-ray bursts. The goals of the project are (1) to explore the physical conditions and processes that distinguish between various outcomes of the explosion and to understand which situations produce gamma-ray bursts; (2) to track neutrino-driven and magnetorotational explosions through compact progenitors and make predictions about explosive yield of various nuclei, mixing of ejecta, and explosion morphologies that can be compared with electromagnetic observations; and (3) to provide predictions for the gravitational wave and neutrino signatures of extreme core collapse supernovae and long gamma bursts.Gamma-ray bursts are probably the most energetic events in the universe, and the physics involved is still not well understood. The project is expected to release its codes and simulations to the astrophysics community, and will also involve the training of graduate students in numerical astrophysics.

该奖项将支持对核心塌陷以及由此产生的大质量恒星超新星爆炸的全面理论研究。 该项目将重点关注某些类别超新星和长伽马射线爆发的致密前身星的三维全星模拟。 该项目的目标是（1）探索区分爆炸的各种结果的物理条件和过程，并了解哪些情况会产生伽马射线暴； （2）通过致密前体跟踪中微子驱动和磁旋转爆炸，并预测各种原子核的爆炸当量、喷射物的混合以及可与电磁观测进行比较的爆炸形态； （3）为极端核心塌陷超新星和长伽马爆发的引力波和中微子特征提供预测。伽马射线爆发可能是宇宙中最有能量的事件，所涉及的物理学仍然没有得到很好的理解。 该项目预计将向天体物理学界发布其代码和模拟，并且还将涉及对研究生进行数值天体物理学的培训。