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. 2023 May 26;130(21):211001.
doi: 10.1103/PhysRevLett.130.211001.

Charge-Sign Dependent Cosmic-Ray Modulation Observed with the Calorimetric Electron Telescope on the International Space Station

O Adriani  1   2 Y Akaike  3   4 K Asano  5 Y Asaoka  5 E Berti  2   6 G Bigongiari  7   8 W R Binns  9 M Bongi  1   2 P Brogi  7   8 A Bruno  10 J H Buckley  9 N Cannady  11   12   13 G Castellini  6 C Checchia  7   8 M L Cherry  14 G Collazuol  15   16 G A de Nolfo  10 K Ebisawa  17 A W Ficklin  14 H Fuke  17 S Gonzi  1   2   6 T G Guzik  14 T Hams  11 K Hibino  18 M Ichimura  19 K Ioka  20 W Ishizaki  5 M H Israel  9 K Kasahara  21 J Kataoka  22 R Kataoka  23 Y Katayose  24 C Kato  25 N Kawanaka  20 Y Kawakubo  14 K Kobayashi  3   4 K Kohri  26 H S Krawczynski  9 J F Krizmanic  12 P Maestro  7   8 P S Marrocchesi  7   8 A M Messineo  8   27 J W Mitchell  12 S Miyake  28 A A Moiseev  12   13   29 M Mori  30 N Mori  2 H M Motz  31 K Munakata  25 S Nakahira  17 J Nishimura  17 S Okuno  18 J F Ormes  32 S Ozawa  33 L Pacini  2   6 P Papini  2 B F Rauch  9 S B Ricciarini  2   6 K Sakai  11   12   13 T Sakamoto  34 M Sasaki  12   13   29 Y Shimizu  18 A Shiomi  35 P Spillantini  1 F Stolzi  7   8 S Sugita  34 A Sulaj  7   8 M Takita  5 T Tamura  18 T Terasawa  5 S Torii  3 Y Tsunesada  36   37 Y Uchihori  38 E Vannuccini  2 J P Wefel  14 K Yamaoka  39 S Yanagita  40 A Yoshida  34 K Yoshida  21 W V Zober  9 CALET Collaboration
Affiliations

Charge-Sign Dependent Cosmic-Ray Modulation Observed with the Calorimetric Electron Telescope on the International Space Station

O Adriani et al. Phys Rev Lett. .

Erratum in

  • Erratum: Charge-Sign Dependent Cosmic-Ray Modulation Observed with the Calorimetric Electron Telescope on the International Space Station [Phys. Rev. Lett. 130, 211001 (2023)].
    Adriani O, Akaike Y, Asano K, Asaoka Y, Berti E, Bigongiari G, Binns WR, Bongi M, Brogi P, Bruno A, Buckley JH, Cannady N, Castellini G, Checchia C, Cherry ML, Collazuol G, de Nolfo GA, Ebisawa K, Ficklin AW, Fuke H, Gonzi S, Guzik TG, Hams T, Hibino K, Ichimura M, Ioka K, Ishizaki W, Israel MH, Kasahara K, Kataoka J, Kataoka R, Katayose Y, Kato C, Kawanaka N, Kawakubo Y, Kobayashi K, Kohri K, Krawczynski HS, Krizmanic JF, Maestro P, Marrocchesi PS, Messineo AM, Mitchell JW, Miyake S, Moiseev AA, Mori M, Mori N, Motz HM, Munakata K, Nakahira S, Nishimura J, Okuno S, Ormes JF, Ozawa S, Pacini L, Papini P, Rauch BF, Ricciarini SB, Sakai K, Sakamoto T, Sasaki M, Shimizu Y, Shiomi A, Spillantini P, Stolzi F, Sugita S, Sulaj A, Takita M, Tamura T, Terasawa T, Torii S, Tsunesada Y, Uchihori Y, Vannuccini E, Wefel JP, Yamaoka K, Yanagita S, Yoshida A, Yoshida K, Zober WV; CALET Collaboration. Adriani O, et al. Phys Rev Lett. 2023 Sep 8;131(10):109902. doi: 10.1103/PhysRevLett.131.109902. Phys Rev Lett. 2023. PMID: 37739390

Abstract

We present the observation of a charge-sign dependent solar modulation of galactic cosmic rays (GCRs) with the Calorimetric Electron Telescope onboard the International Space Station over 6 yr, corresponding to the positive polarity of the solar magnetic field. The observed variation of proton count rate is consistent with the neutron monitor count rate, validating our methods for determining the proton count rate. It is observed by the Calorimetric Electron Telescope that both GCR electron and proton count rates at the same average rigidity vary in anticorrelation with the tilt angle of the heliospheric current sheet, while the amplitude of the variation is significantly larger in the electron count rate than in the proton count rate. We show that this observed charge-sign dependence is reproduced by a numerical "drift model" of the GCR transport in the heliosphere. This is a clear signature of the drift effect on the long-term solar modulation observed with a single detector.

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