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Recent HAWC observations of the pulsar wind nebula regions around Geminga and Monogem provided detailed information about the spatially extended emission of TeV gamma-rays. The spectrum and morphology the TeV emission can be used to infer the features of high-energy electrons/positrons responsible for the IC photons. The angular surface brightness profile of the TeV halo suggested that the diffusion is highly inefficient within at least a few tens of pc around these two pulsars. The existence of such an inefficient diffusion regions may have an influence on the cosmic-ray electron/positron spectrum we observed. I will introduce some works motivated by the HAWC observations, which focus on the influence of inefficient diffusion regions on cosmic-ray electrons.
Zhi-Qiu Huang received his master degree from Nanjing University this year. He obtained an offer from Max Plank Institute for Nuclear Physics and will start his PhD program in September.