supported in part by the National Natural Science Foundation of China under Grants No. 11875327 and No. 11805288;the Fundamental Research Funds for the Central Universities;the Sun YatSen University Science Foundation;supported by the Program for Innovative Talents and Entrepreneur in Jiangsu。
We attempt to interpret the cosmic-ray positron excess by injection from the nearby pulsar Geminga,assuming a two-zone diffusion scenario and an injection spectrum with a low energy cutoff.Since the high energy positr...
Supported by the National Natural Science Foundation of China under Grant No.19673010。
Timing analyses of gamma-ray pulsar Geminga were made to check its rotating stability using released energetic gamma-ray experiment(EGRET)data.Phase motions of Geminga were found from EGRET data in 1995.Joint analysis...
The absolute phases of Geminga observed by COMPTEL Obs. 1 and EGRET Obs. 1 have been compared. The phase-resolved imaging results obtained by a direct demodulation method show that the garmma-ray emission of Geminga i...