3HWC: The Third HAWC Catalog of Very-high-energy Gamma-Ray Sources
Albert, A., Alfaro, R., Alvarez, C., Angeles Camacho, J., Arteaga-Velazquez, J., Arunbabu, K., Avila Rojas, D., Ayala Solares, H., Baghmanyan, V., Belmont-Moreno, E., BenZvi, S., Brisbois, C., Caballero-Mora, K., Capistran, T., Carraminana, A., Casanova, S., Cotti, U., Coutino de Leon, S., De la Fuente, E., Diaz Hernandez, R., Diaz-Cruz, L., Dingus, B., DuVernois, M., Durocher, M., Diaz-Velez, J., Ellsworth, R., Engel, K., Espinoza, C., Fan, K., Fang, K., Alonso, M., Fleischhack, H., Fraija, N., Galvan-Gamez, A., Garcia, D., Garcia-Gonzalez, J., Garfias, F., Giacinti, G., Gonzalez, M., Goodman, J., Harding, J., Hernandez, S., Hinton, J., Hona, B., Huang, D., Hueyotl-Zahuantitla, F., Huntemeyer, P., Iriarte, A., Jardin-Blicq, A., Joshi, V., Kieda, D., Lara, A., Lee, W., Leon Vargas, H., Linnemann, J., Longinotti, A., Luis-Raya, G., Lundeen, J., Lopez Coto, R., Malone, K., Marandon, V., Martinez, O., Martinez-Castellanos, I., Martinez-Castro, J., Matthews, J., Miranda-Romagnoli, P., Morales-Soto , J., Moreno, E., Mostafa, M., Nayerhoda, A., Nellen, L., Newbold, M., Nisa, M., Noriega-Papaqui, R., Olivera-Nieto , L., Omodei, N., Peisker, A., Perez Araujo, Y., Perez-Perez, E., Ren, Z., Rho, C., Riviere, C., Rosa-Gonzalez, D., Ruiz-Velasco, E., Salazar, H., Greus, F., Sandoval, A., Schneider, M., Schoorlemmer, H., Serna, F., Sinnis, G., Smith, A., Springer, R., Surajbali, P., Tollefson, K., Torres, I., Torres-Escobedo, R., Ukwatta, T., Urena-Mena, F., Weisgarber, T.
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 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.