Using muon rings for the optical throughput calibration of the Cherenkov Telescope Array

Markus Gaug (Avtor), Christopher Eckner (Avtor), Gašper Kukec Mezek (Avtor), Samo Stanič (Avtor), Serguei Vorobiov (Avtor), Lili Yang (Avtor), Gabrijela Zaharijas (Avtor), Danilo Zavrtanik (Avtor), Marko Zavrtanik (Avtor), Lukas Zehrer (Avtor)

Povzetek

Muon ring images observed with Imaging Atmospheric Cherenkov Telescopes (IACTs) provide a powerful means to calibrate the optical throughput of IACTs and monitor their optical point spread function. We investigate whether muons ring images can be used as the primary optical throughput calibration method for the telescopes of the future Cherenkov Telescope Array (CTA) and find several additional systematic effects in comparison to previous works. To ensure that the method achieves the accuracy required by CTA, these systematic effects need to be taken into account and minor modifications to the hardware and analysis are necessary. We derive analytic estimates for the expected muon data rates to be used for optical throughput calibration, monitoring of the optical point spread function, with achievable statistical and systematic uncertainties, and explore the potential of muon ring images as a secondary method of camera pixel flat-fielding.

Ključne besede

very-high-energy gamma-ray astronomy;Cherenkov Telescope Array (CTA) Observatory;Imaging Atmospheric Cherenkov Telescopes;IACT optical throughput calibration;IACT camera pixel flat-fielding;IACT optical point spread function (PSF);muon ring images;

Podatki

Jezik:	Angleški jezik
Leto izida:	2019
Tipologija:	1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija:	UNG - Univerza v Novi Gorici
UDK:	539.1
COBISS:	214872835
ISSN:	1824-8039
Št. ogledov:	205
Št. prenosov:	5
Ocena:	0 (0 glasov)
Metapodatki: