PoS - Proceedings of Science
Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - CRI - Cosmic Ray Indirect
The Anisotropy of CRs Observed by YBJ-HA Experiment
Y. Guo, S. Zhao,* Y. Zhang, Y. Feng, Y. Yao, J. He, Y. Guo, C. Liu, H. Hu
*corresponding author
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Pre-published on: July 22, 2019
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The Yangbajing Hybrid Array(YBJ-HA) has accumulated over 0.8 billion cosmic-ray events from December 2016 to June 2018, which is a test array for Large High Altitude Air Shower Observatory Square Kilometer Array(LHAASO-KM2A). The large-scale anisotropy is observed by using
this data. The global sidereal anisotropy exhibits an excess and a deficit with an amplitude of ∼ 10^3 at the median energy of 15TeV, and there is no time dependence of the structure discovered during the operation. Besides, the observed variations in the anti-sidereal and extendedsidereal time frames are at the level of ∼ 10^−5, which ensure the precise measurement of the sidereal anisotropy.
DOI: https://doi.org/10.22323/1.358.0493
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