Prospects for a multi-TeV gamma-ray sky survey with the LHAASO water Cherenkov detector array
Abstract
The Water Cherenkov Detector Array (WCDA) is a major component of the Large High Altitude Air Shower Array Observatory (LHAASO), a new generation cosmic-ray experiment with unprecedented sensitivity, currently under construction. WCDA is aimed at the study of TeV $\gamma$?--> -rays. In order to evaluate the prospects of searching for TeV $\gamma$?--> -ray sources with WCDA, we present a projection of the one-year sensitivity of WCDA to TeV $\gamma$?--> -ray sources from TeVCat using an all-sky approach. Out of 128 TeVCat sources observable by WCDA up to a zenith angle of $45^\circ$?--> , we estimate that 42 would be detectable in one year of observations at a median energy of 1 TeV. Most of them are Galactic sources, and the extragalactic sources are Active Galactic Nuclei (AGN). * Supported by National Natural Science Foundation of China (11761141001, 11635011, 11873005). The LHAASO project is supported by the National Key R & D Program of China (2018YFA0404200), the Chinese Academy of Sciences, the Key Laboratory of Particle Astrophysics, IHEP, CAS
- Publication:
-
Chinese Physics C
- Pub Date:
- June 2020
- DOI:
- 10.1088/1674-1137/44/6/065001
- arXiv:
- arXiv:2002.04819
- Bibcode:
- 2020ChPhC..44f5001A
- Keywords:
-
- TeV γ-ray astronomy;
- observational prospect;
- LHAASO-WCDA;
- Astrophysics - High Energy Astrophysical Phenomena;
- High Energy Physics - Experiment
- E-Print:
- 10 pages,10 figures, it is to be published in Chinese Physics C