Skip to main content
Log in

Charge–Sign Dependence of Cosmic Ray Modulation from the PAMELA Experiment

  • Published:
Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Machine learning is used to obtain ratios of 100–500-MeV positron-to-electron and electron-to-proton fluxes with rigidities of 1–1.7-GV from the PAMELA experimental data for 2006–2016 in order to study the solar modulation of cosmic-ray fluxes with energies below 1 GeV. Observed features of the data and a comparison to AMS-02 experimental results allow study of the charge–sign dependence of modulation around the sunspot minimum in 2009 and the maximum in 2015.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1.
Fig. 2.

REFERENCES

  1. Mikhailov, V.V. and Voronov, S.A., Bull. Russ. Acad. Sci.: Phys., 2021, vol. 85, no. 9, p. 1036.

    Article  Google Scholar 

  2. Mikhailov, V.V., Adriani, O., Bazilevskaya, G.A., et al., Bull. Russ. Acad. Sci.: Phys., 2017, vol. 81, no. 2, p. 203.

    Article  Google Scholar 

  3. Mikhailov, V.V., Adriani, O., Bazilevskaya, G.A., et al., Bull. Russ. Acad. Sci.: Phys., 2019, vol. 83, no. 8, p. 974.

    Article  Google Scholar 

  4. Adriani, O., Barbarino, G.C., Bazilevskaya, G.A., et al., Phys. Rev. Lett., 2011, vol. 106, p. 201101.

    Article  ADS  Google Scholar 

  5. Adriani, O., Barbarino, G.C., Bazilevskaya, G.A., et al., Phys. Rev. Lett., 2013, vol. 111, p. 081102.

    Article  ADS  Google Scholar 

  6. Adriani, O., Barbarino, G.C., Bazilevskaya, G.A., et al., Phys. Rev. Lett., 2016, vol. 116, p. 241105.

    Article  ADS  Google Scholar 

  7. Mechbal, S., Mangeard, P.-S., Clem, J.M., et al., Astrophys. J., 2020, vol. 903, no. 1, p. 21.

    Article  ADS  Google Scholar 

  8. Aguilar, M., Ali Cavasonza L., Ambrosi G. et al., Phys. Rev. Lett., 2018, vol. 121, p. 051101.

    Article  ADS  Google Scholar 

  9. Aguilar, M., Ali Cavasonza L., Ambrosi G. et al., Phys. Rev. Lett., 2018, vol. 121, p. 051102.

    Article  ADS  Google Scholar 

  10. Picozza, P., Galper, A.M., Castellini, G., et al., Astropart. Phys., 2007, vol. 27, no. 4, p. 296.

    Article  ADS  Google Scholar 

  11. Shea, M.A., Smart, D.F., and Gentile, L.C., Phys. Earth Planet. Interact, 1987, vol. 48, nos. 3–4, p. 200.

    Article  ADS  Google Scholar 

  12. TMVA::MethodBDT Class Reference. https://root.cern. ch/doc/master/classTMVA_1_1MethodBDT.html.

  13. Modzelewska, R., Bazilevskaya, G.A., Boezio, M., et al., Astrophys. J., 2020, vol. 904, no. 1, p. 3.

    Article  ADS  Google Scholar 

  14. Garcia-Munoz, M., Meyer, P., Pyle, K.R., and Simpson, J., Proc. 20th Int. Cosmic Ray Conference, Moscow, 1987, vol. 3, p. 303.

  15. Marcelli, N., Boezio, M., Lenni, A., et al., Astrophys. J. Lett., 2022, vol. 925, no. 2, p. L24.

    Article  ADS  Google Scholar 

  16. Bishoff, D., Potgieter, M.S., and Aslam, O.P.M., Astrophys. J., 2019, vol. 878, no. 1, p. 59.

    Article  ADS  Google Scholar 

Download references

Funding

This work was supported by the RF Ministry of Science and Higher Education, project no. 0723-2020-0040 “Fundamental Problems of Cosmic Rays and Dark Matter.”

Author information

Authors and Affiliations

Authors

Consortia

Corresponding author

Correspondence to P. Mukhin.

Additional information

Translated by O. Ponomareva

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mukhin, P., Mikhailov, V.V., Mikhailova, A.V. et al. Charge–Sign Dependence of Cosmic Ray Modulation from the PAMELA Experiment. Bull. Russ. Acad. Sci. Phys. 87, 962–964 (2023). https://doi.org/10.3103/S1062873823702544

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.3103/S1062873823702544

Navigation