| Title: | Search for large-scale anisotropy on arrival directions of ultra-high-energy cosmic rays observed with the telescope array experiment |
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| Authors: | ID Abbasi, R. U. (Author)
ID Abe, Mitsuhiro (Author)
ID Abu-Zayyad, T. (Author)
ID Allen, M. (Author)
ID Azuma, R. (Author)
ID Barcikowski, E. (Author)
ID Belz, J. W. (Author)
ID Bergman, Douglas R. (Author)
ID Blake, S. A. (Author)
ID Lundquist, Jon Paul (Author) |
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| Files: |
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | Motivated by the detection of a significant dipole structure in the arrival directions of ultra-high-energy cosmic rays above 8 EeV reported by the Pierre Auger Observatory (Auger), we search for a large-scale anisotropy using data collected with the surface detector array of the Telescope Array Experiment (TA). With 11 yr of TA data, a dipole structure in a projection of the R.A. is fitted with an amplitude of 3.3% ± 1.9% and a phase of 131° ± 33°. The corresponding 99% confidence-level upper limit on the amplitude is 7.3%. At the current level of statistics, the fitted result is compatible with both an isotropic distribution and the dipole structure reported by Auger. |
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| Keywords: | cosmic rays, ultra-high-energy cosmic radiation, cosmic ray sources, cosmic ray showers, cosmic ray detectors, cosmic ray astronomy, extragalactic astronomy |
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| Year of publishing: | 2020 |
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| Number of pages: | str. 1-5 |
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| Numbering: | Vol. 8989, no. 2 |
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| PID: | 20.500.12556/RUNG-6248 |
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| COBISS.SI-ID: | 50454275 |
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| UDC: | 524 |
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| ISSN on article: | 2041-8205 |
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| DOI: | 10.3847/2041-8213/aba0bc |
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| NUK URN: | URN:SI:UNG:REP:CJ4NTZNV |
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| Publication date in RUNG: | 05.02.2021 |
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| Views: | 2371 |
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| Downloads: | 0 |
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