Theoretical and observational study on supernova explosion mechanism and cosmological application.

Ia型超新星（SNe Ia）是一颗白色矮星的热核爆炸。在本研究中，（1）我计算了Ia超新星的核反应，并研究了Ia型超新星作为宇宙中某些元素起源的作用，（2）提供了一种观测方法，以澄清白色矮星内部的热核火花是如何点燃的。(3)基于这一预测，我检查了现有的观测数据，并表明点火通常始于偏离白色矮星中心的位置。(4)我进一步证明了这种不对称性是Ia超新星神秘多样性的起源。这些结果对超新星宇宙学有着不同的意义。这些发现在相关领域提供了突破，因为这些发现可以通过一个统一的场景解决多个未解决的问题。

Type Ia supernovae (SNe Ia) are thermonuclear explosions of a white dwarf. In this research, (1) I calculated nuclear reactions in SNe Ia and studied a role of type Ia as the origin of some elements in the Universe, and (2) provided an observational method to clarify how the thermonuclear sparks are ignited within a white dwarf. (3) Based on this prediction, I examined available observational data and showed that the ignition generally starts at an offset from the center of a white dwarf. (4) I further proved that this asymmetry is the origin of a mysterious diversity in SNe Ia. These results have various implications for the supernova cosmology. These provide breakthroughs in the related fields since these findings can solve several unresolved issues by a single, unified scenario.