Recent results on ultra-high-energy cosmic rays from the Telescope Array experiment

Hiroyuki Sagawa^1*, Anatoli Fedynitch², Kozo Fujisue², Anton Prosekin², R.U. Abbasi⁹, T. Abu-Zayyad^8,9, D.R. Bergman⁸, C.C.H. Jui⁸, J.H. Kim⁸, J.N. Matthews⁸, P. Sokolsky⁸, G.B. Thomson⁸, I. Komae³, H.S. Shin³, S. Ogio¹, T. Sako¹, K. Kawata¹, K. Fujita¹, E. Kido¹, H. Oshima¹, K. Takahashi¹, C. Koyama¹, S. Udo⁶, K. Yamazaki⁷, Y. Tsunesada³, T. Fujii³, T. Tomida⁵, Y. Tameda¹¹, G.I. Rubtsov⁴, S. Troitsky⁴, I.H. Park¹⁰

¹Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba, Japan
²Institute of Physics, Academia Sinica, Taipei, Taiwan
³Graduate School of Science, Osaka Metrpolitan University, Sumiyoshi, Osaka, Japan
⁴Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Russian Federation
⁵Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, Japan
⁶Faculty of Engineering, Kanagawa University, Yokohama, Kanagawa, Japan
⁷College of Science and Engineering, Chubu University, Kasugai, Aichi, Japan
⁸High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah, USA
⁹Department of Physics, Loyola University-Chicago, Chicago, Illinois, USA
¹⁰Department of Physics, Sungkyunkwan University, Seoul, Korea
¹¹Graduate School of Engineering, Osaka Electro-Communication University, Neyagawa, Osaka, Japan

* Presenter:Hiroyuki Sagawa, email:hsagawa@icrr.u-tokyo.ac.jp

The Telescope Array (TA), located in Utah, USA, is the largest observatory for ultra-high-energy cosmic rays (UHECRs) in the Northern Hemisphere. To explore the origin of UHECRs, we measure their energy spectrum, mass composition, and anisotropies in arrival directions. In this talk, we introduce the TA experiment and present selected highlights from recent results.

Keywords: Ultra-High-Energy Cosmic Rays, Telescope Array, Energy Spectrum, Mass Composition, Anisotropy