Revisiting the Geminga halo at GeV energies with Fermi-LAT data

Yu Meng, Yun-Feng Liang, Ben-Yang Zhu +2

Nearby pulsars within $\sim 1\mathrm{kpc}$ are considered to be possible sources of 10-500 GeV cosmic-ray positron excess measured by PAMELA and AMS-02. A TeV halo around Geminga is…