基于DAMPE伽马射线的暗物质间接探测研究

暗物质粒子的物理本质研究是国际重大研究前沿之一。目前的主要探测手段之一为暗物质间接探测。我国发射的暗物质粒子探测卫星，主要通过对电子宇宙射线与伽马射线的能谱、空间分布等的测量来发现暗物质粒子或高精度的限制其物理参量（例如暗物质粒子的质量、湮灭截面或衰变寿命等）。本项目中我们计划充分利用暗物质粒子探测卫星的伽马射线数据并综合利用一些公开获取的数据，系统的在银河系中心、矮星系、星系团等区域开展暗物质湮灭所致的线谱信号、连续谱信号搜寻，预期将在部分方向上得到重要进展。

It is widely believed that the dark matter particles can be indirectly detected in gamma-rays and/or electron cosmic rays. The main goal of the Drak Matter Particle Explorer (DAMPE), which can measure the electrons and gamma-rays with very high energy resolution, is to detect the dark matter annihilation/decay signals or tightly constrain the physical parameters of the dark matter particles (including their rest mass, the annihilation cross section/the lifetime). Here we propose to analyze the DAMPE gamma-ray data, together with some public data, in the directions of the inner Galaxy, the dwarf galaxies and the galaxy clusters to search for gamma-ray line or the continual gamma-ray emission that are correlated to the distribution of the dark matter. Significant progresses are expecetd.