Speaker
Description
The recent LHAASO survey has revealed a new population of >25 TeV sources in the Northern Hemisphere, including several PeVatron candidates without clear counterparts at lower energies. These “TeV-only” sources present a critical test for models of Galactic particle acceleration. VERITAS, with its superior angular resolution and sensitivity between 100 GeV and 25 TeV, is well positioned to constrain their morphology and spectra, and to search for emission bridging the gap between GeV and PeV energies. Using a combination of archival and new observations, VERITAS is conducting a focused campaign on this class of sources. I will summarize the challenges these objects pose for Imaging Atmospheric Cherenkov Telescopes—such as their extreme hardness, faint sub-10 TeV flux, and often extended morphology and present the status and new results from our ongoing VERITAS follow-up program.
