PoS - Proceedings of Science
Volume 395 - 37th International Cosmic Ray Conference (ICRC2021) - CRI - Cosmic Ray Indirect
Telescope Array anisotropy summary
I. Tkachev*, T. Fujii, D.Y. Ivanov, C.C.H. Jui, K. Kawata, J.H. Kim, M.Y. Kuznetsov, T. Nonaka, S. Ogio, G.I. Rubtsov, H. Sagawa, G.B. Thomson, P.G. Tinyakov and S. Troitsky
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Pre-published on: July 31, 2021
Published on: March 18, 2022
In this talk, we summarise the results of recent anisotropy studies conducted by the Telescope Array (TA) collaboration. At largest scales we test the TA data for the presence of a dipole. On smaller scales, an update on the excess of events in the direction of Ursa Major previously found in the TA data will be presented. These flux variations may trace the distribution of UHECR sources. We will examine the data for correlations with large-scale structures in the nearby Universe, and as a result, hints for the chemical composition of primaries will be provided. We also discuss a related anisotropy of the UHECR spectrum.
DOI: https://doi.org/10.22323/1.395.0392
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