The First LHAASO Catalog of Gamma-Ray Sources
Zhen Cao, F. Aharonian, Q. An, Axikegu, Y.X. Bai, Y.W. Bao, D., Bastieri, X.J. Bi, Y.J. Bi, J.T. Cai, Q. Cao, W.Y. Cao, Zhe Cao, J. Chang,, J.F. Chang, A.M. Chen, E.S. Chen, Liang Chen, Lin Chen, Long Chen, M.J. Chen,, M.L. Chen, Q.H. Chen, S.H. Chen, S.Z. Chen, T.L. Chen

TL;DR
This paper presents the first catalog of gamma-ray sources detected by LHAASO, including 90 sources with significant detections above 1 TeV, highlighting new ultra-high energy sources and detailed source characteristics.
Contribution
The first comprehensive catalog of gamma-ray sources from LHAASO, including 32 newly identified TeV sources and detailed spectral and positional data.
Findings
90 gamma-ray sources detected with >5σ significance
32 new TeV sources proposed based on association criteria
43 sources detected with >4σ ultra-high energy emission
Abstract
We present the first catalog of very-high energy and ultra-high energy gamma-ray sources detected by the Large High Altitude Air Shower Observatory (LHAASO). The catalog was compiled using 508 days of data collected by the Water Cherenkov Detector Array (WCDA) from March 2021 to September 2022 and 933 days of data recorded by the Kilometer Squared Array (KM2A) from January 2020 to September 2022. This catalog represents the main result from the most sensitive large coverage gamma-ray survey of the sky above 1 TeV, covering declination from 20 to 80. In total, the catalog contains 90 sources with an extended size smaller than and a significance of detection at . Based on our source association criteria, 32 new TeV sources are proposed in this study. Among the 90 sources, 43 sources are detected with ultra-high energy ( TeV) emission at…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Particle Detector Development and Performance · Dark Matter and Cosmic Phenomena
