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Anisotropy of cosmic ray fluxes measured with AMS-02 on the ISS

Velasco, M. A.; Casaus, J.; Maná, C.; Molero, M.; Gebauer, I.; Graziani, M.; Gervasi, M.; La Vacca, G.; Rancoita, P. G.

Abstract (englisch):
A measurement of the cosmic ray anisotropy on the arrival directions of elementary particles (electrons, positrons and protons) and light nuclei (helium, carbon and oxygen) has been performed in galactic coordinates by the Alpha Magnetic Spectrometer onboard the International Space Station. The analysis is based on the sample of events collected in the first 6.5 years (electrons and positrons), and 7.5 (protons, helium, carbon and oxygen) of data taking. The results are consistent with isotropy for all cosmic ray species and upper limits on the dipole amplitude have been computed. In particular, 95% credible interval upper limits of δ < 1.9% and δ < 0.5% are obtained for positrons and electrons, respectively, above 16 GeV. On the other hand, the upper limits of protons, helium, carbon and oxygen above 200 GV are found to be δ < 0.38%, δ < 0.36%, δ < 1.9% and δ < 1.7%, respectively.

DOI: 10.1088/1742-6596/1468/1/012083
Zugehörige Institution(en) am KIT Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1742-6588, 1742-6596
KITopen-ID: 1000119467
Erschienen in Journal of physics / Conference series
Verlag IOP Publishing
Band 1468
Seiten Article No.012083
Bemerkung zur Veröffentlichung 16th International Conference on Topics in Astroparticle and Underground Physics (TAUP 2019) 9-13 September 2019, Toyama, Japan
Vorab online veröffentlicht am 01.02.2020
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