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North-south asymmetry for high-energy cosmic-ray electrons measured with the PAMELA experiment
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2013 (English)In: Journal of Experimental and Theoretical Physics, ISSN 1063-7761, E-ISSN 1090-6509, Vol. 117, no 2, 268-273 p.Article in journal (Refereed) Published
Abstract [en]

The north-south asymmetry for cosmic-ray particles was measured with one instrument of the PAMELA satellite-borne experiment in the period June 2006-May 2009. The analysis has been performed by two independent methods: by comparing the count rates in regions with identical geomagnetic conditions and by comparing the experimental distribution of particle directions with the simulated distribution that would be in the case of an isotropic particle flux. The dependences of the asymmetry on energy release in the PAMELA calorimeter and on time have been constructed. The asymmetry (N (n) - N (s) )/(N (n) + N (s) ) is 0.06 +/- 0.004 at the threshold energy release in the calorimeter and gradually decreases with increasing energy release. The observed effect is shown to be produced by electrons in the energy range 10-100 GeV.

Place, publisher, year, edition, pages
2013. Vol. 117, no 2, 268-273 p.
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Physical Sciences
URN: urn:nbn:se:kth:diva-131731DOI: 10.1134/S1063776113100129ISI: 000324558800009ScopusID: 2-s2.0-84885207478OAI: diva2:656858

QC 20131017

Available from: 2013-10-17 Created: 2013-10-17 Last updated: 2013-10-17Bibliographically approved

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Carlson, PerPearce, Mark
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Particle and Astroparticle Physics
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