报告题目：Distinguishing dark matter and pulsar interpretations of high energy cosmic-ray e±

报告人：殷鹏飞 副研究员（中国科学院高能物理研究所）

报告摘要：The excesses in the cosmic-ray electron and positron spectra,as observed by many experiments,have sparked significant theoretical investigation. Distinguishing between the two primary hypotheses - dark matter annihilation/decay and pulsars - based on spectral characteristics is a challenging task. In this presentation,I will provide an overview of the methods employed to distinguish between these two interpretations,with a particular focus on the precise measurement of the energy spectra. If pulsars are the source of the observed excess,the expected variability in their distribution may introduce distinct irregularities in the spectra. I will introduce our recent research,in which we use an irregularity estimator to detect these potential features in the positron energy spectrum. Our analysis of the current AMS-02 data reveals these spectral irregularities with a statistical significance of 1.75σ. However,our projection indicates that,based on data collected over a 20-year period by AMS-02,such irregularities could be identified with a confidence level of 3σ.

报告时间：2024年6月4日（周二）14:00

报告地点：仙林园区3-402室

欢迎大家参加！