| Title: | Indications of Intermediate-Scale Anisotropy of Cosmic Rays with Energy Greater Than 57 EeV in the Northern Sky Measured with the Surface Detector of the Telescope Array Experiment |
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| Authors: | ID Abbasi, R.U. (Author)
ID Lundquist, Jon Paul (Author), et al. |
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| Files: |
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| Language: | English |
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| Work type: | Not categorized |
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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: | We have searched for intermediate-scale anisotropy in the arrival directions of ultrahigh-energy cosmic rays with energies above 57 EeV in the northern sky using data collected over a 5 year period by the surface detector of the Telescope Array experiment. We report on a cluster of events that we call the hotspot, found by oversampling using 20∘-radius circles. The hotspot has a Li-Ma statistical significance of 5.1σ, and is centered at R.A.=146.7∘, Dec.=43.2∘. The position of the hotspot is about 19∘ off of the supergalactic plane. The probability of a cluster of events of 5.1σ significance, appearing by chance in an isotropic cosmic-ray sky, is estimated to be 3.7×10−4 (3.4σ). |
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| Keywords: | acceleration of particles, cosmic rays, large-scale structure of universe, surveys |
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| Publication version: | Version of Record |
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| Year of publishing: | 2014 |
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| Number of pages: | 5 |
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| Numbering: | 790, L21 |
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| PID: | 20.500.12556/RUNG-5140-1e6d805a-500a-2e7b-fb75-f302c0385a97 |
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| COBISS.SI-ID: | 5615355 |
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| DOI: | 10.1088/2041-8205/790/2/L21 |
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| NUK URN: | URN:SI:UNG:REP:TV7SLGDN |
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| Publication date in RUNG: | 24.04.2020 |
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| Views: | 3888 |
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| Downloads: | 0 |
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