A1 Journal article – refereed
Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station




List of Authors: Aguilar M, Cavasonza LA, Ambrosi G, Arruda L, Attig N, Aupetit S, Azzarello P, Bachlechner A, Barao F, Barrau A, Barrin L, Bartoloni A, Basara L, Basegmez-du Pree S, Battarbee M, Battiston R, Becker U, Behlmann M, Beischer B, Berdugo J, Bertucci B, Bindel KF, Bindi V, de Boer W, Bollweg K, Bonnivard V, Borgia B, Boschini MJ, Bourquin M, Bueno EF, Burger J, Cadoux F, Cai XD, Capell M, Caroff S, Casaus J, Castellini G, Cervelli F, Chae MJ, Chang YH, Chen AI, Chen GM, Chen HS, Chen Y, Cheng L, Chou HY, Choumilov E, Choutko V, Chung CH, Clark C, Clavero R, Coignet G, Consolandi C, Contin A, Corti C, Creus W, Crispoltoni M, Cui Z, Dadzie K, Dai YM, Datta A, Delgado C, Della Torre S, Demirkoz MB, Derome L, Di Falco S, Dimiccoli F, Diaz C, von Doetinchem P, Dong F, Donnini F, Duranti M, D'Urso D, Egorov A, Eline A, Eronen T, Feng J, Fiandrini E, Fisher P, Formato V, Galaktionov Y, Gallucci G, Garcia-Lopez RJ, Gargiulo C, Gast H, Gebauer I, Gervasi M, Ghelfi A, Giovacchini F, Gomez-Coral DM, Gong J, Goy C, Grabski V, Grandi D, Graziani M, Guo KH, Haino S, Han KC, He ZH, Heil M, Hsieh TH, Huang H, Huang ZC, Huh C, Incagli M, Ionica M, Jang WY, Jia Y, Jinchi H, Kang SC, Kanishev K, Khiali B, Kim GN, Kim KS, Kirn T, Konak C, Kounina O, Kounine A, Koutsenko V, Kulemzin A, La Vacca G, Laudi E, Laurenti G, Lazzizzera I, Lebedev A, Lee HT, Lee SC, Leluc C, Li HS, Li JQ, Li Q, Li TX, Li ZH, Li ZY, Lim S, Lin CH, Lipari P, Lippert T, Liu D, Liu H, Lordello VD, Lu SQ, Lu YS, Luebelsmeyer K, Luo F, Luo JZ, Lyu SS, Machate F, Mana C, Marin J, Martin T, Martinez G, Masi N, Maurin D, Menchaca-Rocha A, Meng Q, Mikuni VM, Mo DC, Mott P, Nelson T, Ni JQ, Nikonov N, Nozzoli F, Oliva A, Orcinha M, Palermo M, Palmonari F, Palomares C, Paniccia M, Pauluzzi M, Pensotti S, Perrina C, Phan HD, Picot-Clemente N, Pilo F, Pizzolotto C, Plyaskin V, Pohl M, Poireau V, Quadrani L, Qi XM, Qin X, Qu ZY, Raiha T, Rancoita PG, Rapin D, Ricol JS, Rosier-Lees S, Rozhkov A, Rozza D, Sagdeev R, Schael S, Schmidt SM, von Dratzig AS, Schwering G, Seo ES, Shan BS, Shi JY, Siedenburg T, Son D, Song JW, Tacconi M, Tang XW, Tang ZC, Tescaro D, Ting SCC, Ting SM, Tomassetti N, Torsti J, Turkoglu C, Urban T, Vagelli V, Valente E, Valtonen E, Acosta MV, Vecchi M, Velasco M, Vialle JP, Wang LQ, Wang NH, Wang QL, Wang X, Wang XQ, Wang ZX, Wei CC, Weng ZL, Whitman K, Wu H, Wu X, Xiong RQ, Xu W, Yan Q, Yang J, Yang M, Yang Y, Yi H, Yu YJ, Yu ZQ, Zannoni M, Zeissler S, Zhang C, Zhang F, Zhang J, Zhang JH, Zhang SW, Zhang Z, Zheng ZM, Zhuang HL, Zhukov V, Zichichi A, Zimmermann N, Zuccon P, Zuccon P, Zichichi A, Zimmermann N, Zhuang HL, Zhukov V, Zhang Z, Zheng ZM, Zhang JH, Zhang SW, Zhang F, Zhang J
Publisher: AMER PHYSICAL SOC
Publication year: 2018
Journal: Physical Review Letters
Journal name in source: PHYSICAL REVIEW LETTERS
Journal acronym: PHYS REV LETT
Volume number: 121
Issue number: 5
ISSN: 0031-9007
eISSN: 1079-7114

Abstract
We present high-statistics, precision measurements of the detailed time and energy dependence of the primary cosmic-ray electron flux and positron flux over 79 Bartels rotations from May 2011 to May 2017 in the energy range from 1 to 50 GeV. For the first time, the charge-sign dependent modulation during solar maximum has been investigated in detail by leptons alone. Based on 23.5 x 10(6) events, we report the observation of short-term structures on the timescale of months coincident in both the electron flux and the positron flux. These structures are not visible in the e(+)/e(-) flux ratio. The precision measurements across the solar polarity reversal show that the ratio exhibits a smooth transition over 830 +/- 30 days from one value to another. The midpoint of the transition shows an energy dependent delay relative to the reversal and changes by 260 +/- 30 days from 1 to 6 GeV.

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Last updated on 2019-29-01 at 15:21