An updated survey of Active Galaxies with the HAWC gamma-ray observatory

Abstract

We present an update of the survey of Active Galaxies with the High Altitude Water Cherenkov (HAWC) gamma-ray observatory. This work adds 567 days of HAWC data to the previously published survey, providing a refined analysis of an updated total exposure of 2090 days. The sample includes 138 nearby AGNs from the 3FHL catalog. We fit a modified power-law to their very high energy spectra, including the exponential attenuation caused by the Extragalactic Background Light. We found four sources with significant detections (above 5$\ddot{I}ƒ$): the radio galaxy M87 and the BL Lac objects Mkn 421, Mkn 501 and 1ES 1215+303. We also report eight sources with a marginal detection (between 3$\ddot{I}ƒ$ and 5$\ddot{I}ƒ$) of which seven are classified as BL Lac objects and one as a radio galaxy.

Contribution to the International Cosmic Ray Conference ICRC 2023. 7 pages, 3 figures