{ "id": "2310.02484", "version": "v1", "published": "2023-10-03T23:21:50.000Z", "updated": "2023-10-03T23:21:50.000Z", "title": "An updated survey of Active Galaxies with the HAWC gamma-ray observatory", "authors": [ "Fernando Ureña-Mena", "Alberto Carramiñana", "Daniel Rosa-González", "Anna Lia Longinotti", "HAWC Collaboration" ], "comment": "Contribution to the International Cosmic Ray Conference ICRC 2023. 7 pages, 3 figures", "doi": "10.22323/1.444.0805", "categories": [ "astro-ph.HE", "astro-ph.GA" ], "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$\\sigma$): 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$\\sigma$ and 5$\\sigma$) of which seven are classified as BL Lac objects and one as a radio galaxy.", "revisions": [ { "version": "v1", "updated": "2023-10-03T23:21:50.000Z" } ], "analyses": { "keywords": [ "hawc gamma-ray observatory", "active galaxies", "updated survey", "bl lac objects mkn", "high altitude water cherenkov" ], "tags": [ "conference paper", "journal article" ], "note": { "typesetting": "TeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable" } } }