Faculty of Physics
M.V.Lomonosov Moscow State University

The energy spectrum of gamma quanta from the Crab nebula according to the TAIGA astrophysical complex in hybrid observation mode

E. A. Okuneva

Memoirs of the Faculty of Physics 2023. N 4.

  • Article

The TAIGA Astrophysical complex (Tunka Advanced Instrument for cosmic ray and Gamma Astronomy) is located in the Tunka Valley at a distance of 50 km from Lake Baikal and is designed to solve problems of gamma astronomy and high-energy cosmic ray physics. The combined operation (hybrid approach) of atmospheric Cherenkov telescopes of the TAIGA-IACT (Imaging Atmospheric Cherenkov Telescope) and wide-angle Cherenkov detectors of the TAIGA-HiSCORE (High Sensitivity COsmic Rays and gamma Explorer) installation is aimed at registering gamma quanta with energies of more than 40 TeV. According to the data of the TAIGA-HiSCORE installation, information about the direction of arrival of the SHAL and the energy of the primary particle is restored by means of amplitude-time analysis. According to the TAIGA-IACT installation, events from gamma quanta from the hadron background are distinguished with high accuracy by analyzing the image obtained in the telescope camera from the Cherenkov light. The paper describes a technique for reconstructing the parameters of extensive air showers (EAS) induced by high-energy gamma quanta, the results of processing experimental data from the observation of the Crab Nebula source (for 3 seasons in the period 2019-2022, more than 150 hours of observations) obtained by the hybrid method.

Received: 2023 June 2
Approved: 2023 September 22
96.50.S- Cosmic rays
E. A. Okuneva
$^1$Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics, Moskow 119991, Russia.
Issue 4, 2023

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