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Title:The Cherenkov transparency coefficient for the atmospheric monitoring and array calibration at the Cherenkov Telescope Array South
Authors:ID Stefanik, Stanislav (Author)
ID Eckner, Christopher (Author)
ID Kukec Mezek, Gašper (Author)
ID Stanič, Samo (Author)
ID Vorobiov, Serguei (Author)
ID Yang, Lili (Author)
ID Zaharijas, Gabrijela (Author)
ID Zavrtanik, Danilo (Author)
ID Zavrtanik, Marko (Author)
ID Zehrer, Lukas (Author), et al.
Files:.pdf ICRC2019_800.pdf (1,90 MB)
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Language:English
Work type:Unknown
Typology:1.08 - Published Scientific Conference Contribution
Organization:UNG - University of Nova Gorica
Abstract:Reconstruction of energies of very-high-energy γ–rays observed by imaging atmospheric Cherenkov telescopes is affected by changes in the atmospheric conditions and the performance of telescope components. Reliable calibration schemes aimed at these effects are necessary for the forthcoming Cherenkov Telescope Array (CTA) to achieve its goals on the maximally allowed systematic uncertainty of the global energy scale. A possible means of estimating the atmospheric attenuation of Cherenkov light is the method of the Cherenkov transparency coefficient (CTC). The CTC is calculated using the telescope detection rates, dominated by the steady cosmic ray background, while properly correcting for the hardware and observational conditions. The coefficient can also be used to relatively calibrate the optical throughput of telescopes on the assumption of homogeneous atmospheric transparency above the array. Using Monte Carlo simulations, we investigate here the potential of the CTC method for the atmospheric monitoring and telescope cross-calibration at the CTA array in the southern hemisphere. We focus on the feasibility of the method for the array of telescopes of three sizes in different observation configurations and under various levels of atmospheric attenuation.
Keywords:very-high-energy gamma-ray astronomy, Cherenkov Telescope Array (CTA) Observatory, imaging atmospheric Cherenkov telescopes (IACTs), atmospheric monitoring, IACT calibration
Publication status:Published
Publication version:Version of Record
Publication date:01.01.2019
Year of publishing:2019
Number of pages:8 str.
PID:20.500.12556/RUNG-9483 New window
COBISS.SI-ID:215045635 New window
UDC:539.1
ISSN on article:1824-8039
DOI:10.22323/1.358.0800 New window
NUK URN:URN:SI:UNG:REP:A6KSYHW1
Publication date in RUNG:14.11.2024
Views:757
Downloads:5
Metadata:XML DC-XML DC-RDF
:
STEFANIK, Stanislav, ECKNER, Christopher, KUKEC MEZEK, Gašper, STANIČ, Samo, VOROBIOV, Serguei, YANG, Lili, ZAHARIJAS, Gabrijela, ZAVRTANIK, Danilo, ZAVRTANIK, Marko and ZEHRER, Lukas, 2019, The Cherenkov transparency coefficient for the atmospheric monitoring and array calibration at the Cherenkov Telescope Array South. In : 36th International Cosmic Ray Conference [also] ICRC2019, Madison, WI, U. S. A., July 24th-August 1st, 2019 [online]. Published Scientific Conference Contribution. 2019. [Accessed 7 April 2025]. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=9483
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Record is a part of a proceedings

Title:36th International Cosmic Ray Conference [also] ICRC2019, Madison, WI, U. S. A., July 24th-August 1st, 2019
COBISS.SI-ID:5444091 New window

Record is a part of a journal

Title:Proceedings of science
Shortened title:Pos proc. sci.
Publisher:Sissa
ISSN:1824-8039
COBISS.SI-ID:20239655 New window

Document is financed by a project

Funder:ARIS - Slovenian Research and Innovation Agency
Funding programme:Raziskovalni program
Project number:P1-0031
Name:Večglasniška astrofizika

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License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

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