Precise Measurement of the Cosmic-Ray Electron and Positron Spectrum with CALET on the International Space Station

CALET Collaboration

研究成果: Conference article査読

抄録

Primary objectives of the CALET (CALorimetric Electron Telescope) mission are to search for possible nearby cosmic-ray sources and dark matter signatures with the precise measurement of the electron and positron (all-electron) spectrum. The instrument, consisting of a charge detector, an imaging calorimeter and a total absorption calorimeter, is optimized to measure the all-electron spectrum well into the TeV region with a thick calorimeter of 30 radiation length with fine shower-imaging capability. Due to the excellent energy resolution (a few % above 10 GeV) and the outstanding e/p separation (∼ 105), CALET achieves optimal performance for a detailed search for structures in the energy spectrum. CALET has been accumulating scientific data for more than five years without any major interruption, and the statistics of observed electron events has increased more than double since the latest publication in 2018. In this paper we will present precise measurements of the all-electron spectrum up to several TeV, as obtained with the high statistics data, and we will briefly discuss about its interpretation.

本文言語English
論文番号105
ジャーナルProceedings of Science
395
出版ステータスPublished - 2022 3月 18
イベント37th International Cosmic Ray Conference, ICRC 2021 - Virtual, Berlin, Germany
継続期間: 2021 7月 122021 7月 23

ASJC Scopus subject areas

  • 一般

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