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Periodicities in the Daily Proton Fluxes from 2011 to 2019 Measured by the Alpha Magnetic Spectrometer on the International Space Station from 1 to 100 GV

We present the precision measurement of the daily proton fluxes in cosmic rays from May 20, 2011 to October 29, 2019 (a total of 2824 days or 114 Bartels rotations) in the rigidity interval from 1 to 100 GV based on $5.5 \times 10^9$protons collected with the Alpha Magnetic Spectrometer aboard the International Space Station. The proton fluxes exhibit variations on multiple timescales. From 2014 to 2018, we observed recurrent flux variations with a period of 27 days. Shorter periods of 9 days and 13.5 days are observed in 2016. The strength of all three periodicities changes with time and rigidity. The rigidity dependence of the 27-day periodicity is different from the rigidity dependences of 9-day and 13.5-day periods. Unexpectedly, the strength of 9-day and 13.5-day periodicities increases with increasing rigidities up to $\sim 10  \textrm{GV}$ and $\sim 20  \textrm{GV}$, respectively. Then the strength of the periodicities decreases with increasing rigidity up to 100 GV.

     

    Phys. Rev. Lett. 127, 271102
    FIG. 1

    AMS-02 Publications

    Total citations to-date: 6, 892
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    Periodicities in the Daily Proton Fluxes from 2011 to 2019 Measured by the Alpha Magnetic Spectrometer on the International Space Station from 1 to 100 GV
    Phys. Rev. Lett. 127, 271102 (2021), Citations: 27, View supplemental material and data
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    Properties of a New Group of Cosmic Nuclei: Results from the Alpha Magnetic Spectrometer on Sodium, Aluminum, and Nitrogen
    Phys. Rev. Lett. 127, 021101 (2021), Citations: 18, View supplemental material and data
    Published on Editors' Suggestion
    Properties of Heavy Secondary Fluorine Cosmic Rays: Results from the Alpha Magnetic Spectrometer
    Phys. Rev. Lett. 126, 081102 (2021), Citations: 35, View supplemental material and data
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    The Alpha Magnetic Spectrometer (AMS) on the International Space Station: Part II - Results from the First Seven Years
    Phys. Rep. 894, 1 (2021), Citations: 196, View supplemental material and data
    Published on Featured in Physics
    Properties of Iron Primary Cosmic Rays: Results from the Alpha Magnetic Spectrometer
    Phys. Rev. Lett. 126, 041104 (2021), Citations: 66, View supplemental material and data
    Published on Editors' Suggestion Featured in Physics
    Properties of Neon, Magnesium, and Silicon Primary Cosmic Rays Results from the Alpha Magnetic Spectrometer
    Phys. Rev. Lett. 124, 211102 (2020), Citations: 84, View supplemental material and data
    Published on Editors' Suggestion
    Properties of Cosmic Helium Isotopes Measured by the Alpha Magnetic Spectrometer
    Phys. Rev. Lett. 123, 181102 (2019), Citations: 42, View supplemental material and data
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    Towards Understanding the Origin of Cosmic-Ray Electrons
    Phys. Rev. Lett. 122, 101101 (2019), Citations: 152, View supplemental material and data
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    Towards Understanding the Origin of Cosmic-Ray Positrons
    Phys. Rev. Lett. 122, 041102 (2019), Citations: 255, View supplemental material and data
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    Precision Measurement of Cosmic-Ray Nitrogen and its Primary and Secondary Components with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 121, 051103 (2018), Citations: 84, View supplemental material and data
    Published on Editors' Suggestion
    Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 121, 051102 (2018), Citations: 82, View supplemental material and data
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    Observation of Fine Time Structures in the Cosmic Proton and Helium Fluxes with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 121, 051101 (2018), Citations: 103, View supplemental material and data
    Published on Editors' Suggestion Featured in Physics
    Observation of New Properties of Secondary Cosmic Rays Lithium, Beryllium, and Boron by the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 120, 021101 (2018), Citations: 242, View supplemental material and data
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    Observation of the Identical Rigidity Dependence of He, C, and O Cosmic Rays at High Rigidities by the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 119, 251101 (2017), Citations: 268, View supplemental material and data
    Published on Editors' Suggestion Featured in Physics
    Precision Measurement of the Boron to Carbon Flux Ratio in Cosmic Rays from 1.9 GV to 2.6 TV with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 117, 231102 (2016), Citations: 353, View supplemental material and data
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    Antiproton Flux, Antiproton-to-Proton Flux Ratio, and Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 117, 091103 (2016), Citations: 527, View supplemental material and data
    Published on Editors' Suggestion
    Precision Measurement of the Helium Flux in Primary Cosmic Rays of Rigidities 1.9 GV to 3 TV with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 115, 211101 (2015), Citations: 502, View supplemental material and data
    Published on Editors' Suggestion
    Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 114, 171103 (2015), Citations: 910, View supplemental material and data
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    Precision Measurement of the (${\rm e}^+$ + ${\rm e}^−$) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 113, 221102 (2014), Citations: 360, View supplemental material and data
    Published on Editors' Suggestion Featured in Physics
    Electron and Positron Fluxes in Primary Cosmic Rays Measured with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 113, 121102 (2014), Citations: 607, View supplemental material and data
    Published on Editors' Suggestion
    High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5 – 500 GeV with the Alpha Magnetic Spectrometer on the International Space Station
    Phys. Rev. Lett. 113, 121101 (2014), Citations: 663, View supplemental material and data
    Published on Editors' Suggestion Featured in Physics Physics Viewpoint
    First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV
    Phys. Rev. Lett. 110, 141102 (2013), Citations: 1,316, View supplemental material and data

    * Citation information from High-Energy Physics Literature Database.