| Full text | |
| Author(s): |
Delgado Giler, Andres G.
[1]
;
Arbeletche, Luan B.
[1]
;
Bird, Ralph
[2]
;
Ong, Rene A.
[2]
;
de Souza, Vitor
[1]
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, Inst Fis Sao Carlos, Sao Carlos - Brazil
[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 - USA
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Astroparticle Physics; v. 124, JAN 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
A method is proposed to reconstruct the depth at which showers reach the maximum number of charged particles (Xcharged max ) using atmospheric Cherenkov telescopes. The dependence of the Cherenkov signal with telescope distance from shower core is explored and a region in which the measurement is possible is determined (150 to 200 m). A parametrization is presented to reconstruct Xcharged max. The resolution of the method is studied as a function of energy, for different primary particle types and for telescope fields of view ranging from 3.5 degrees to 10 degrees. Good resolution (similar to 25 g/cm(2)) is achieved for most of the cases of primary particle type (gamma ray, proton and iron nuclei) and energy (10 TeV < E < 300 TeV). Very good resolution (<15 g/cm(2)) is achieved in the best cases and not so good resolution (> 40 g/cm(2)) is seen for energies below 30 TeV. The results presented here contribute to the understanding of the development of gamma-ray showers and suggest another possibility of using atmospheric Cherenkov telescopes to study cosmic rays in the TeV-PeV energy range. (C) 2020 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 15/15897-1 - Cherenkov Telescope Array - CTA |
| Grantee: | Luiz Vitor de Souza Filho |
| Support Opportunities: | Research Projects - Thematic Grants |