Journal
ADVANCES IN SPACE RESEARCH
Volume 42, Issue 10, Pages 1670-1675Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.asr.2007.04.043
Keywords
Long duration balloon; Cosmic-ray electrons; Cosmic-ray origin
Categories
Funding
- Scientific Research on Priority Area A [14039212]
- Scientific Research C [16540268, 18540293]
- Grants-in-Aid for Scientific Research [18540293, 16540268, 14039212] Funding Source: KAKEN
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Cosmic-ray electrons have been observed in the energy region from 10 GeV to 1 TeV with the PPB-BETS by a long duration balloon flight using a Polar Patrol Balloon (PPB) in Antarctica. The observation was carried out for 13 days at an average altitude of 35 km in January 2004. The PPB-BETS detector is an imaging calorimeter composed of scintillating-fiber belts and plastic scintillators inserted between lead plates. In the study of cosmic-ray electrons, there have been some suggestions that high-energy electrons above 100 GeV are a powerful probe to identify nearby cosmic-ray sources and search for particle dark matter. In this paper, we present the energy spectrum of cosmic-ray electrons in the energy range from 100 GeV to I TeV at the top of atmosphere, and compare our spectrum with the results from other experiments. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.
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