Corpus ID: 235485459

# Discovery of the Ultra-high energy gamma-ray source LHAASO J2108+5157

```@inproceedings{Collaboration2021DiscoveryOT,
title={Discovery of the Ultra-high energy gamma-ray source LHAASO J2108+5157},
author={The Lhaaso Collaboration},
year={2021}
}```
We report the discovery of a UHE gamma-ray source, LHAASO J2108+5157, by analyzing the LHAASO-KM2A data of 308.33 live days. Significant excess of gamma-ray induced showers is observed in both energy bands of 25−100 TeV and >100 TeV with 9.5σ and 8.5σ, respectively. This source is not significantly favored as an extended source with the angular extension smaller than the pointspread function of KM2A. The measured energy spectrum from 20 to 200 TeV can be approximately described by a power-law… Expand
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