| Title: | Depth of maximum of air-shower profiles : testing the compatibility of the measurements at the Pierre Auger Observatory and the Telescope Array |
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| Authors: | ID Abdul Halim, A. (Author)
ID Filipčič, Andrej (Author)
ID Lundquist, Jon Paul (Author)
ID Shivashankara, Shima Ujjani (Author)
ID Stanič, Samo (Author)
ID Vorobiov, Serguei (Author)
ID Zavrtanik, Danilo (Author)
ID Zavrtanik, Marko (Author) |
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| Files: |  ICRC2023_249.pdf (1,19 MB)
MD5: 3CC38AF97C8042D6606AC6428E71F522
 https://pos.sissa.it/444/
https://pos.sissa.it/444/249/pdf
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.08 - Published Scientific Conference Contribution |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | The Pierre Auger Observatory (Auger) and the Telescope Array (TA), located, respectively, in the Southern and Northern hemispheres, are the largest ultra-high-energy cosmic ray (UHECR) observatories. The Auger and TA Collaborations have collected unprecedented statistics providing us with a unique opportunity to search for the differences between the UHECR energy spectra and mass compositions in the complementary sky regions. To correctly attribute such differences to
the properties of the UHECR sources or propagation, the systematic effects in the measurements of each observatory should be considered properly. In this context, the task of the Auger – TA mass composition working group is to identify possible differences of astrophysical origin in the measurements of the depth of the maximum of air-shower profiles, X_max, performed at both observatories using the fluorescence technique. Due to distinct approaches to event selection and analysis atAuger and TA, theworking group uses a specially designed method to transfer the Auger X_max distributions into the TA detector. To this end, dedicated air-shower and detector simulations for the TA Black Rock Mesa and Long Ridge fluorescence detector stations were performed with the Sibyll 2.3d hadronic interaction model. From the comparison of the first two moments and the shapes of X_max distributions for energies above 10^18.2 eV, no significant differences between the Auger and TA measurements were found. |
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| Keywords: | Pierre Auger Observatory, Telescope Array, ultra-high energy cosmic rays, fluorescence detectors |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 01.01.2023 |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-15 |
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| PID: | 20.500.12556/RUNG-8778  |
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| COBISS.SI-ID: | 182009603 |
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| UDC: | 52 |
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| ISSN on article: | 1824-8039 |
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| DOI: | 10.22323/1.444.0249 |
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| NUK URN: | URN:SI:UNG:REP:03J5BRXX |
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| Publication date in RUNG: | 22.01.2024 |
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| Views: | 438 |
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| Downloads: | 5 |
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