佐川 宏行 (宇宙線研)
 "テレスコープアレイ実験の最近の結果"
The TA is the largest hybrid experiment in the northern hemisphere to study ultra-high energy cosmic rays. The Telescope Array (TA) has an array of 507 plastic scintillation detectors deployed in a square grid of 1.2 km spacing, and three fluorescence detector stations overlooking the surface detector array. The TA is located in west-central Utah in USA, and started hybrid operation in March, 2008. Recent results from TA on the spectrum, composition, and arrival directions of ultra-high energy cosmic rays will be presented.