Energy Spectrum of Cosmic-ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station

Abstract

First results of a cosmic-ray electron + positron spectrum, from 10 GeV to 3 TeV, is presented based upon observations with the CALET instrument on the ISS starting in October, 2015. Nearly a half million electron + positron events are included in the analysis. CALET is an all-calorimetric instrument with total vertical thickness of 30 $X_0$ and a fine imaging capability designed to achieve a large proton rejection and excellent energy resolution well into the TeV energy region. The observed energy spectrum over 30 GeV can be fit with a single power law with a spectral index of -3.152 $\pm$ 0.016 (stat.+ syst.). Possible structure observed above 100 GeV requires further investigation with increased statistics and refined data analysis.

arXiv comment7 pages, 6 figures, published 1 November 2017 in Physical Review Letters

References in corpus (9)

• Observation of an anomalous positron abundance in the cosmic radiation
• The energy spectrum of cosmic-ray electrons at TeV energies
• Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S
• Proton and Helium Spectra from the CREAM-III Flight
• The Most Likely Sources of High Energy Cosmic-Ray Electrons in Supernova Remnants
• A New calculation of the atmospheric neutrino flux in a 3-dimensional scheme
• Cosmic-ray electron+positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope
• Energy Calibration of CALET Onboard the International Space Station
• In-flight measurement of the absolute energy scale of the Fermi Large Area Telescope

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