Observation by NASA’s Fermi Gamma-ray Space Telescope identified GeV gamma-ray excess toward LHAASO J1912+1014u (IMAGE)

Hiroshima University

Observation by NASA’s Fermi Gamma-ray Space Telescope identified GeV gamma-ray excess toward LHAASO J1912+1014u

Caption

Observation by NASA’s Fermi Gamma-ray Space Telescope identified GeV gamma-ray excess toward LHAASO J1912+1014u and confirmed it to be a proton PeVatron through multiwavelength observations and modeling. The source is marked by a solid circle and is largely extended, with a diameter of more than 1 degree. For comparison, the size of the Moon is indicated by a dashed circle. (Adapted from Tsunefumi Mizuno, et al. The Astrophysical Journal. July 16, 2026)

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Adapted from Tsunefumi Mizuno, et al. The Astrophysical Journal. July 16, 2026

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