The 2HWC HAWC Observatory Gamma Ray Catalog
Abstract
We present the first catalog of TeV gamma-ray sources realized with the recently completed High Altitude Water Cherenkov Observatory (HAWC). It is the most sensitive wide field-of-view TeV telescope currently in operation, with a 1-year survey sensitivity of ~5-10% of the flux of the Crab Nebula. With an instantaneous field of view >1.5 sr and >90% duty cycle, it continuously surveys and monitors the sky for gamma ray energies between hundreds GeV and tens of TeV. HAWC is located in Mexico at a latitude of 19 degree North and was completed in March 2015. Here, we present the 2HWC catalog, which is the result of the first source search realized with the complete HAWC detector. Realized with 507 days of data and represents the most sensitive TeV survey to date for such a large fraction of the sky. A total of 39 sources were detected, with an expected contamination of 0.5 due to background fluctuation. Out of these sources, 16 are more than one degree away from any previously reported TeV source. The source list, including the position measurement, spectrum measurement, and uncertainties, is reported. Seven of the detected sources may be associated with pulsar wind nebulae, two with supernova remnants, two with blazars, and the remaining 23 have no firm identification yet.
Keywords
Cite
@article{arxiv.1702.02992,
title = {The 2HWC HAWC Observatory Gamma Ray Catalog},
author = {A. U. Abeysekara and A. Albert and R. Alfaro and C. Alvarez and J. D. Álvarez and R. Arceo and J. C. Arteaga-Velázquez and H. A. Ayala Solares and A. S. Barber and N. Bautista-Elivar and J. Becerra Gonzalez and A. Becerril and E. Belmont-Moreno and S. Y. BenZvi and D. Berley and A. Bernal and J. Braun and C. Brisbois and K. S. Caballero-Mora and T. Capistrán and A. Carramiñana and S. Casanova and M. Castillo and U. Cotti and J. Cotzomi and S. Coutiño de León and E. de la Fuente and C. De León and R. Diaz Hernandez and B. L. Dingus and M. A. DuVernois and J. C. Díaz-Vélez and R. W. Ellsworth and K. Engel and D. W. Fiorino and N. Fraija and J. A. García-González and F. Garfias and M. Gerhardt and A. González Muñoz and M. M. González and J. A. Goodman and Z. Hampel-Arias and J. P. Harding and S. Hernandez and A. Hernandez-Almada and J. Hinton and C. M. Hui and P. Hüntemeyer and A. Iriarte and A. Jardin-Blicq and V. Joshi and S. Kaufmann and D. Kieda and A. Lara and R. J. Lauer and W. H. Lee and D. Lennarz and H. León Vargas and J. T. Linnemann and A. L. Longinotti and G. Luis Raya and R. Luna-García and R. López-Coto and K. Malone and S. S. Marinelli and O. Martinez and I. Martinez-Castellanos and J. Martínez-Castro and H. Martínez-Huerta and J. A. Matthews and P. Miranda-Romagnoli and E. Moreno and M. Mostafá and L. Nellen and M. Newbold and M. U. Nisa and R. Noriega-Papaqui and R. Pelayo and J. Pretz and E. G. Pérez-Pérez and Z. Ren and C. D. Rho and C. Rivière and D. Rosa-González and M. Rosenberg and E. Ruiz-Velasco and H. Salazar and F. Salesa Greus and A. Sandoval and M. Schneider and H. Schoorlemmer and G. Sinnis and A. J. Smith and R. W. Springer and P. Surajbali and I. Taboada and O. Tibolla and K. Tollefson and I. Torres and T. N. Ukwatta and G. Vianello and L. Villaseñor and T. Weisgarber and S. Westerhoff and I. G. Wisher and J. Wood and T. Yapici and P. W. Younk and A. Zepeda and H. Zhou},
journal= {arXiv preprint arXiv:1702.02992},
year = {2017}
}
Comments
Submitted 2017/02/09 to the Astrophysical Journal