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Proton Rejection in the Measurements of High Energy Electrons and Positrons Detected from Lateral Aperture of the GAMMA-400 Gamma-Ray Telescope

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

Abstract

The space observatory GAMMA-400 is processed currently in accordance with the Federal Space Program of the Russian Federation for 2016–2025. The observatory includes a gamma-ray telescope for experimental studies of gamma rays in the energy range from ~20 MeV to ~1 TeV with high angular and energy resolution, as well as for research of electrons + positrons at energies above 100 GeV in both the main (top-down), and lateral apertures. At present time, there are experimental indications concerning the possibility of existing of spectrum break in electrons + positrons intensities about TeV energies. This point stimulates several speculations to explain such phenomena. In this paper we examined capabilities of GAMMA-400 telescope to explore this problem. The methods for electron detection in the energy range from 100 GeV up to 10 TeV from the lateral aperture of a gamma-ray telescope are presented. Also, the results of calculation for proton rejection factor and for electron acceptance are revealed.

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Funding

The work was supported by the RF Ministry of Science and Higher Education, project “Fundamental and Applied Research of Cosmic Rays” no. FSWU-2023-0068.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    A. A. Leonov, A. M. Galper, N. P. Topchiev, N. Yu. Pappe & S. I. Suchkov

  2. National Research Nuclear University “MEPhI” (Moscow Engineering Physics Institute), 115409, Moscow, Russia

    A. A. Leonov, A. M. Galper, I. V. Arkhangelskaja, A. I. Arkhangelskiy, I. V. Chernysheva, O. D. Dalkarov, M. D. Kheymits, M. G. Korotkov, A. G. Malinin, A. G. Mayorov, A. V. Mikhailova, V. V. Mikhailov & Yu. T. Yurkin

  3. Scientific Research Institute for System Analysis, Russian Academy of Sciences, 117218, Moscow, Russia

    A. V. Bakaldin

Authors
  1. A. A. Leonov
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  2. A. M. Galper
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  5. A. I. Arkhangelskiy
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  7. I. V. Chernysheva
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  8. O. D. Dalkarov
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  9. M. D. Kheymits
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  10. M. G. Korotkov
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  13. A. V. Mikhailova
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  14. V. V. Mikhailov
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  17. Yu. T. Yurkin
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Corresponding author

Correspondence to A. A. Leonov.

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Leonov, A.A., Galper, A.M., Topchiev, N.P. et al. Proton Rejection in the Measurements of High Energy Electrons and Positrons Detected from Lateral Aperture of the GAMMA-400 Gamma-Ray Telescope. Bull. Russ. Acad. Sci. Phys. 87, 1027–1031 (2023). https://doi.org/10.3103/S1062873823702325

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  • DOI: https://doi.org/10.3103/S1062873823702325

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