【9.25; Seminar】2025年粒子天体物理全国重点实验室系列学术报告 #23：Mirages and Large TeV Halo-Pulsar Offsets from Cosmic Ray Propagation

时间/Time: 9月25日周四下午4:00/Thursday, September 25, 4:00 p.m.

地点/Location: 多学科楼229会议室/Meeting Room 229, Multidisciplinary building

报告人/Speaker: 包逸伟 

题目/Title: Mirages and Large TeV Halo-Pulsar Offsets from Cosmic Ray Propagation

主持人/Host:李哲/ Dr. LI Zhe

摘要/Abstract:

The study of extended $\gamma$-ray sources usually assumes symmetric diffusion of cosmic rays. However, recent observations of multiple sources near single pulsars and significant offsets between TeV halo centroids and their parent pulsars suggest that this assumption is overly simplistic. In this Letter, we demonstrate that asymmetric propagation of cosmic rays near their accelerators may create multiple TeV sources instead of a single symmetric source. This mechanism also explains the large offsets between TeV halo centroids and their {parent} pulsars. We demonstrate that several perplexing detected sources can be naturally {interpreted} without invoking additional invisible accelerators.

个人简介/Biography:

包逸伟现为上海交通大学李政道研究所博士后，主要研究兴趣：宇宙线粒子在星际介质中的传播。