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3HWC: The Third HAWC Catalog of Very-High-Energy Gamma-ray Sources

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arxiv 2007.08582 v3 pith:Y4N6N6WK submitted 2020-07-16 astro-ph.HE astro-ph.IM

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
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V. Baghmanyan E. Belmont-Moreno S.Y. BenZvi C. Brisbois K.S. Caballero-Mora T. Capistr\'an A. Carrami\~nana S. Casanova U. Cotti S. Couti\~no de Le\'on E. De la Fuente R. Diaz Hernandez L. Diaz-Cruz B.L. Dingus M.A. DuVernois M. Durocher J.C. D\'iaz-V\'elez R.W. Ellsworth K. Engel C. Espinoza K.L. Fan K. Fang M. Fern\'andez Alonso H. Fleischhack N. Fraija A. Galv\'an-G\'amez D. Garcia J.A. Garc\'ia-Gonz\'alez F. Garfias G. Giacinti M.M. Gonz\'alez J.A. Goodman J.P. Harding S. Hernandez J. Hinton B. Hona D. Huang F. Hueyotl-Zahuantitla P. H\"untemeyer A. Iriarte A. Jardin-Blicq V. Joshi D. Kieda A. Lara W.H. Lee H. Le\'on Vargas J.T. Linnemann A.L. Longinotti G. Luis-Raya J. Lundeen R. L\'opez-Coto K. Malone V. Marandon O. Martinez I. Martinez-Castellanos J. Mart\'inez-Castro J.A. Matthews P. Miranda-Romagnoli J.A. Morales-Soto E. Moreno M. Mostaf\'a A. Nayerhoda L. Nellen M. Newbold M.U. Nisa R. Noriega-Papaqui L. Olivera-Nieto N. Omodei A. Peisker Y. P\'erez Araujo E.G. P\'erez-P\'erez Z. Ren C.D. Rho C. Rivi\`ere D. Rosa-Gonz\'alez E. Ruiz-Velasco H. Salazar F. Salesa Greus A. Sandoval M. Schneider H. Schoorlemmer F. Serna G. Sinnis A.J. Smith R.W. Springer P. Surajbali E. Tabachnick K. Tollefson I. Torres R. Torres-Escobedo T.N. Ukwatta F. Ure\~na-Mena T. Weisgarber F. Werner E. Willox A. Zepeda H. Zhou C. de Le\'on J.D. \'Alvarez
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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 $\geq$ 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 $1^\circ$ of previously detected TeV emitters, and twenty sources that are more than $1^\circ$ 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 ATNF pulsar catalog and supernova remnants in the Galactic supernova remnant catalog.

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