An Enigmatic PeVatron in an Area around HII Region G35.6$-$0.5

The LHAASO Collaboration, Zhen Cao, F. Aharonian +294

Identifying Galactic PeVatrons (PeV particle accelerators) from the ultra-high-energy (UHE, >100 TeV) ${\hat{I}}^3$-ray sources plays a crucial role in revealing the origin of Galactic cosm…