| 整理番号 | 31-14 |
| 日時 | 2019年11月25日(月) 15:30-17:00 |
| 場所 | 宇宙線研究所６階 大会議室 |
| 講師 | Dr. Yana Zhezher (ICRR) |
| 題名 | “Cosmic-ray mass composition study and ultra-high-energy neutrino search with the Telescope Array experiment data” |
| 概要など | We present the ultra-high-energy cosmic-ray (UHECR) studies with the use of the Telescope Array experiment data. Mass composition and an upper limit on the down-going neutrino flux for cosmic rays with energies > 1018.0eV are obtained with the use of the Telescope Array surface detector data employing the multivariate analysis methods based on the Boosted Decision Tree technique. Proton-to-helium ratio is obtained for the UHECR with energies 1018.0<E<1019.0eV from the tail of the depth of the shower maximum distribution using the exponential decay scale values measured by the Telescope Array experiment and the Pierre Auger Observatory: the latter is used to constrain the astrophysical models of the origin of cosmic rays. プレゼンファイル |
