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Title:Joint analysis of the energy spectrum of ultra-high-energy cosmic rays as measured at the Pierre Auger Observatory and the Telescope Array
Authors:ID Tsunesada, Y. (Author)
ID Filipčič, Andrej (Author)
ID Lundquist, Jon Paul (Author)
ID Stanič, Samo (Author)
ID Vorobiov, Serguei (Author)
ID Zavrtanik, Danilo (Author)
ID Zavrtanik, Marko (Author)
ID Zehrer, Lukas (Author), et al.
Files:.pdf ICRC2021_337.pdf (1,02 MB)
MD5: B50D4C0C5255402BD5DD2C5DCBE75B81
 
URL https://pos.sissa.it/395/337/
 
URL https://pos.sissa.it/395/337/pdf
 
Language:English
Work type:Not categorized
Typology:1.08 - Published Scientific Conference Contribution
Organization:UNG - University of Nova Gorica
Abstract:The measurement of the energy spectrum of ultra-high-energy cosmic rays (UHECRs) is of crucial importance to clarify their origin and acceleration mechanisms. The Pierre Auger Observatory in Argentina and the Telescope Array (TA) in the US have reported their measurements of UHECR energy spectra observed in the southern and northern hemisphere, respectively. The region of the sky accessible to both Observatories ([−15,+24] degrees in declination) can be used to cross-calibrate the two spectra. The Auger-TA energy spectrum working group was organized in 2012 and has been working to understand the uncertainties in energy scale in both experiments, their systematic differences, and differences in the shape of the spectra. In previous works, we reported that there was an overall agreement of the energy spectra measured by the two observatories below 10 EeV while at higher energies, a remaining significant difference was observed in the common declination band. We revisit this issue to understand its origin by examining the systematic uncertainties, statistical effects, and other possibilities. We will also discuss the differences in the spectra in different declination bands and a new feature in the spectrum recently reported by the Auger Collaboration.
Keywords:Telescope Array, Pierre Auger Observatory, indirect detection, surface detection, ground array, ultra-high energy, cosmic rays, energy spectrum, anisotropy, declination dependence, fully sky
Publication status:Published
Year of publishing:2022
PID:20.500.12556/RUNG-8506 New window
COBISS.SI-ID:166662915 New window
DOI:10.22323/1.395.0337 New window
NUK URN:URN:SI:UNG:REP:J2819TBA
Publication date in RUNG:02.10.2023
Views:1748
Downloads:7
Metadata:XML DC-XML DC-RDF
:
TSUNESADA, Y., FILIPČIČ, Andrej, LUNDQUIST, Jon Paul, STANIČ, Samo, VOROBIOV, Serguei, ZAVRTANIK, Danilo, ZAVRTANIK, Marko and ZEHRER, Lukas, 2022, Joint analysis of the energy spectrum of ultra-high-energy cosmic rays as measured at the Pierre Auger Observatory and the Telescope Array. In : 37th International Cosmic Ray Conference [online]. Published Scientific Conference Contribution. Trieste, Italy. 2022. [Accessed 14 April 2025]. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=8506
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Record is a part of a monograph

Title:37th International Cosmic Ray Conference : ICRC2023
Place of publishing:Trieste, Italy
Publisher:Proceedings of Science
Year of publishing:2022

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
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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