3HWC: The Third HAWC Catalog of Very-High-Energy Gamma-ray Sources
A. Albert, R. Alfaro, C. Alvarez, J.R. Angeles Camacho, J.C., Arteaga-Vel\'azquez, K.P. Arunbabu, D. Avila Rojas, H.A. Ayala Solares, V., Baghmanyan, E. Belmont-Moreno, S.Y. BenZvi, C. Brisbois, K.S. Caballero-Mora,, T. Capistr\'an, A. Carrami\~nana, S. Casanova, U. Cotti

TL;DR
This paper presents the third HAWC gamma-ray catalog, revealing 65 TeV sources with improved sensitivity, including new sources and potential counterparts, advancing our understanding of high-energy gamma-ray sky.
Contribution
The paper introduces the most sensitive HAWC catalog to date, identifying new TeV gamma-ray sources and potential associations with known astrophysical objects.
Findings
65 sources detected at ≥5 sigma significance
8 new sources without previous counterparts
14 new sources potentially linked to Fermi LAT sources
Abstract
We present a new catalog of TeV gamma-ray sources using 1523 days of data from the High Altitude Water Cherenkov (HAWC) observatory. The catalog represents the most sensitive survey of the Northern gamma-ray sky at energies above several TeV, with three times the exposure compared to the previous HAWC catalog, 2HWC. We report 65 sources detected at 5 sigma significance, along with the positions and spectral fits for each source. The catalog contains eight sources that have no counterpart in the 2HWC catalog, but are within of previously detected TeV emitters, and twenty sources that are more than away from any previously detected TeV source. Of these twenty new sources, fourteen have a potential counterpart in the fourth \textit{Fermi} Large Area Telescope catalog of gamma-ray sources. We also explore potential associations of 3HWC sources with pulsars in the…
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