Extended GeV gamma-ray emission around 4FGL J1626.0-4917 is detected and modeled as a 0.28-degree Gaussian disk at 7.2 sigma significance, with a photon index of 2.73, possibly from hadronic interactions with surrounding gas.
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Diffuse Gamma-ray Emission Around 4FGL J1626.0-4917
Extended GeV gamma-ray emission around 4FGL J1626.0-4917 is detected and modeled as a 0.28-degree Gaussian disk at 7.2 sigma significance, with a photon index of 2.73, possibly from hadronic interactions with surrounding gas.