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We present the first catalogs of the highest-energy (above 56 TeV and 100TeV) gamma-ray sources seen by the High Altitude Water Cherenkov (HAWC)Observatory. The wide field-of-view of HAWC naturally lends itself to unbiasedall-sky surveys and newly developed event-by-event gamma-ray energyreconstruction algorithms have allowed unprecedented energy resolution. Thesources presented here are the highest-energy sources ever detected. All arecoincident with known lower-energy gamma-ray sources within our Galaxy. Theseobjects may have implications for the sources of Galactic cosmic rays; sinceGalactic CRs have been observed up to PeV energies, sources acceleratingparticles to these energies must exist. These sources, called "PeVatrons",would have corresponding hard gamma-ray spectra that extend to high energieswithout any spectral break or cutoff. We will present measurements of thespectra of these highest-energy gamma-ray sources and discuss if any of themcan be identified as PeVatron candidates.

First HAWC Spectra of Galactic Gamma-ray Sources Above 100 TeV and the Implications for Cosmic-ray Acceleration