PT Journal
AU HAWC Collaboration (Albert, Aea
   Salesa Greus, F
TI 3HWC: The Third HAWC Catalog of Very-high-energy Gamma-Ray Sources
SO Astrophysical Journal
JI Astrophys. J.
PY 2020
BP 76 - 14pp
VL 905
IS 1
DI 10.3847/1538-4357/abc2d8
LA English
DE Gamma-ray astronomy; Gamma-ray observatories; High energy astrophysics; Cosmic ray sources
AB 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 1 degrees of previously detected TeV emitters, and 20 sources that are more than 1 degrees away from any previously detected TeV source. Of these 20 new sources, 14 have a potential counterpart in the fourth Fermi Large Area Telescope catalog of gamma-ray sources. We also explore potential associations of 3HWC sources with pulsars in the Australia Telescope National Facility (ATNF) pulsar catalog and supernova remnants in the Galactic supernova remnant catalog.
ER