VERITAS and Fermi-LAT observations of new TeV gamma-ray sources discovered by HAWC

The HAWC (High Altitude Water Cherenkov) observatory recently published their second source catalog (2HWC) with over a year of observations at full sensitivity to gamma rays with energies between hundreds of GeV and tens of TeV. Sixteen of the 39 HAWC sources were found to be at least one degree away from any previously known TeV source, representing exciting targets for further study. Here we report on 12 of these unassociated HAWC sources using observations at higher spatial resolution with both VERITAS and Fermi-LAT. We use 8 years of LAT data at energies above 10 GeV and varying exposures with VERITAS. In the case of 2HWC J1953+294, VERITAS finds weak gamma-ray emission from the region and there is no LAT detection. This new TeV source is associated with the supernova remnant DA 495. For the other unassociated HAWC sources no VERITAS or LAT counterpart is found, but the upper limits from our observations can help to constrain the spectrum and spatial extension of the HAWC sources. Additionally, we studied 2HWC J1930+188 for which VERITAS had previously detected a TeV counterpart associated with the remnant G54.1+0.3. Our updated Fermi-LAT analysis also detects emission from this region, consistent with previous models of a pulsar wind nebula origin. Future multi-instrument studies of new HAWC sources promise to uncover the origins of additional cosmic accelerators.