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arXiv · 2310.02484

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

Fernando Ureña-Mena·Alberto Carramiñana·Daniel Rosa-González·Anna Lia Longinotti·HAWC Collaboration
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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.

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Fernando Ureña-Mena, Alberto Carramiñana, Daniel Rosa-González, Anna Lia Longinotti, HAWC Collaboration. 2023-10-03. An updated survey of Active Galaxies with the HAWC gamma-ray observatory. https://doi.org/10.22323/1.444.0805

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