在过去十年宇宙线领域一个非常重要的进展就是发现宇宙线电子能谱在百GeV以上超出宇宙线标准传播模型，其成因也成为当前重要的前沿科学问题。甚高能γ射线是研究相对论性电子起源、加速及传播机制的重要探针，地球邻近的脉冲星Geminga是电子超出来源的理想候选源之一，在TeV能段已观测到显著的扩展γ辐射，Geminga的深入观测研究，对理解宇宙线传播和地球附近电子超出问题具有重要意义。本项目计划利用LHAASO实验在甚高能区高灵敏度、大视场、全天候的独特优势，首次精确测量Geminga的甚高能γ能谱结构，以及不同能量下空间分布形态，探究脉冲星及其星云的能谱演化特性和物理内因，建立更准确的多能区电子传播模型，为地球附近电子超出问题提供更具价值的物理结果，同时为暗物质物理等重大科学问题提供线索和依据。

A very important development in the field of cosmic rays over the past decade has been the discovery that cosmic ray electron spectroscopy has exceeded the cosmic line standard propagation model above GeV, and its causes have become an important frontier scientific problem at present. Very high energy gamma rays are important probes to study the origin, acceleration and propagation mechanism of relativistic electrons, and the pulsar Geminga adjacent to the earth is one of the ideal candidate sources for electrons beyond the source, and significant extended gamma radiation has been observed in the TeV segment, and the Geminga in-depth observation studies It is of great significance to understand the propagation of cosmic rays and the excess of electrons near the earth. The project plans to use the unique advantages of high sensitivity, large field of view and all-weather in the very high energy region of the LHAASO experiment to accurately measure the very high energy gamma spectrum structure of Geminga and the spatial distribution patterns under different energies for the first time, and to explore the energy spectrum evolution characteristics and physical internal causes of pulsars and their nebulae.A more accurate electronic propagation model of multi-energy zone is established to provide more valuable physical results for electrons near the earth, and to provide clues and basis for major scientific problems such as dark matter physics.