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  • Observation of Complex Time...
    Ambrosi, G; Aupetit, S; Bachlechner, A; Barrau, A; Barrin, L; Bartoloni, A; Basara, L; Battarbee, M; Becker, U; Bertucci, B; de Boer, W; Boschini, M J; Capell, M; Castellini, G; Chae, M J; Chen, H S; Chou, H Y; Choutko, V; Clavero, R; Consolandi, C; Dai, Y M; Datta, A; Delgado, C; Derome, L; D'Urso, D; Feng, J; Fisher, P; Formato, V; Gallucci, G; Gargiulo, C; Gast, H; Gebauer, I; Gervasi, M; Giovacchini, F; Gong, J; Goy, C; Guo, K H; Han, K C; Hsieh, T H; Incagli, M; Ionica, M; Jia, Yi; Jinchi, H; Kang, S C; Kim, K S; Kirn, Th; Konak, C; Kounina, O; Laudi, E; Lee, H T; Li, H S; Li, J Q; Li, Z H; Liu, Hu; Lordello, V D; Mañá, C; Martínez, G; Masi, N; Maurin, D; Mikuni, V M; Mott, P; Nikonov, N; Nozzoli, F; Oliva, A; Palomares, C; Paniccia, M; Perrina, C; Phan, H D; Picot-Clemente, N; Pizzolotto, C; Plyaskin, V; Pohl, M; Quadrani, L; Qi, X M; Qin, X; Räihä, T; Rancoita, P G; Rozza, D; Schmidt, S M; Shan, B S; Tacconi, M; Tang, X W; Tescaro, D; Torsti, J; Türkoğlu, C; Wang, L Q; Wang, X Q; Wei, C C; Weng, Z L; Yan, Q; Yang, M; Yu, Z Q; Zeissler, S; Zhang, F; Zhang, J H; Zhang, S W; Zheng, Z M; Zhukov, V; Zichichi, A; Zimmermann, N

    Physical review letters, 2018-Aug-03, Volume: 121, Issue: 5
    Journal Article

    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 23.5×10^{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.