Study on large zenith angle air showers with LHAASO-KM2A
At large zenith angles (LZAs）, the electromagnetic component (EMC) of conventional air showers undergoes substantial attenuation in the atmosphere, being significantly reduced long before reaching the ground. This attenuation creates a unique observational scenario where horizontal air showers (HAS) emerge as a “well-shielded laboratory.” In this special environment, penetrating particles like high-energy muons and cosmic neutrinos can be detected more effectively, as they leave characteristic traces that are distinguishable from the attenuated EMC-dominated showers. This presentation will showcase characteristic events recorded by LHAASO-KM2A at LZAs, including detailed phenomenology of HAS as observed by the detector. Additionally, we will present neutrino flux constraints associated with GRB 221009A, along with analyses of the other gamma-ray-bursts in 2022 that fell within the observational window of LHAASO-KM2A.
Authors
- Lifeng Chen (ORCID: https://orcid.org/0000-0003-2580-928X)
- S. W. Cui (ORCID: https://orcid.org/0009-0005-6260-3493)
- Qinyuan Zhang (ORCID: https://orcid.org/0000-0001-6544-4735)
- Z. Yang (ORCID: https://orcid.org/0009-0009-2174-0714)
- Sujie Lin (ORCID: https://orcid.org/0000-0003-1182-7487)
- Haosu Zhou (ORCID: https://orcid.org/0000-0002-3850-2693)
- Qing-Wen Tang (ORCID: https://orcid.org/0000-0001-7471-8451)
- DiSciascio Giuseppe
- Xishui Tian (ORCID: https://orcid.org/0000-0001-8462-0407)
- Q. B. Gou (ORCID: https://orcid.org/0000-0001-6797-0990)
- Xiangting Liu
- Quan Zhang (ORCID: https://orcid.org/0000-0002-4577-9981)
- Z. Li (ORCID: https://orcid.org/0000-0002-1232-2803)
- Ming-Ming Kang
Publication Details
- Published
- 2025-09-23
- DOI
- https://doi.org/10.22323/1.501.0277
- Primary Topic
- Astrophysics and Cosmic Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China