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Fine structure in the cosmic ray electron spectrum measured by the ATIC-2 and ATIC-4 experiments |
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| Authors: | A D Panov J H Adams Jr H S Ahn G L Bashindzhagyan J W Watts J P Wefel J Wu T G Guzik V I Zatsepin J Isbert K C Kim M Christl E N Kouznetsov M I Panasyuk E B Postnikov E S Seo N V Sokolskaya J Chang |
| Institution: | 1. Skobeltsyn Institute of Nuclear Physics, Moscow State University, Moscow, Russia 2. Marshall Space Flight Center, Marshall, USA 3. University of Maryland, College Park, USA 4. Louisiana State University, Louisiana, USA 5. Purple Mountain Observatory, Chinese Academy of Sciences, Beijing, China |
| Abstract: | A strong anomaly in form of a wide peak in the energy range 300–800 GeV was discovered in the first measurements of the electron spectrum in the energy range from 20 GeV to 3 TeV by the balloon-borne experiment ATIC 1]. The experimental data processing and analysis of the electron spectrum with different criteria for selection of electrons completely independent of the results reported in 1] is employed in the present paper. New independent analysis generally confirms the results of 1] but shows that the spectrum in the region of the anomaly is represented by a number of narrow peaks. Measured spectrum is compared to the spectrum of 1] and to the spectrum of the Fermi/LAT experiment. |
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