PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Gamma-ray Astronomy (GA)
Performance of the ASTRI Mini-Array with different levels of the Night Sky Background
F.G. Saturni*, S. Lombardi, L.A. Antonelli, C. Bigongiari, E. Fedorova, A. Giuliani, F. Lucarelli, M. Mastropietro and G. Pareschi
Full text: pdf
Pre-published on: July 25, 2023
Published on:
Abstract
The ASTRI Mini-Array is an array of nine small-sized (4-m diameter) and large field of view ($\sim$10$^\circ$) imaging atmospheric Cherenkov telescopes under deployment at the {\itshape Observatorio del Teide} (Tenerife, Spain). The system is sensitive to $\gamma$-ray radiation in the energy range $1 \div 200$ TeV. The telescopes are characterized by a dual-mirror optical system and equipped with silicon photo-multiplier cameras. These sensors can be operated under relatively high levels of night-sky background, thus allowing us to extend the duty cycle of Cherenkov observations beyond the "dark" regime alone. In order to assess the performance of the system with different night-sky brightness conditions, a study of the intensity and spectral shape of the illumination at the Teide Observatory site as a function of the array pointing direction and of the lunar phase has been carried out. Then, dedicated Monte Carlo simulations have been generated with a set of increasing brightness levels and subsequently reduced with A-SciSoft (ASTRI Scientific Software), the official scientific software package of the ASTRI Project. In this contribution, we present the performance of the ASTRI Mini-Array achieved with the aforementioned MC simulations, discussing the implications of our finding on the duty cycle of the system and its scientific potentialities.
DOI: https://doi.org/10.22323/1.444.0717
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.