Unveiling TeV Gamma-Ray Emission from the DA 495 Region with HAWC Data

The observational results of the DA 495 region, which contains the pulsar wind nebula (PWN) DA 495, are not fully consistent across different very-high-energy (VHE; > 100 GeV) gamma-ray experiments. Accounting for these discrepancies is challenging due to Galactic diffuse emission (GDE) and several source candidates in the region. To resolve them, we performed a dedicated analysis using 2,860 days of data from the High-Altitude Water Cherenkov (HAWC) Observatory. We identify three extended sources, including one coincident with DA 495, and report their positions, spatial extensions, and spectra. Additionally, we investigate the origin of the VHE gamma-ray emission through these morphological and spectral results. This work provides the most detailed study of the DA 495 region in the VHE gamma-ray band to date and offers insights into particle acceleration mechanisms at TeV energies.