20.500.12556/RUNG-5144-624281a5-fd40-c696-e5f4-c750501b7014
Evidence of Intermediate-scale Energy Spectrum Anisotropy of Cosmic Rays E ≥ 10^19.2 eV with the Telescope Array Surface Detector
Evidence for an intermediate-scale energy spectrum anisotropy has been found in the arrival directions of ultra-high energy cosmic rays for energies greater than 10^19.2 eV in the northern hemisphere using 7 years of Telescope Array surface detector data. A relative energy distribution test is done comparing events inside oversampled spherical caps of equal exposure, to those outside, using the Poisson likelihood ratio. The center of maximum significance is at 9h16m, 45°, and has a deficit of events with energies 10^19.2 ≤ E < 10^19.75 eV and an excess for E ≥ 10^19.75 eV. The post-trial probability of this energy anisotropy, appearing by chance anywhere on an isotropic sky, is found by Monte Carlo simulation to be 9 × 10−5 (3.74σ global).
astroparticle physics
cosmic rays
anisotropy
large-scale structure of universe
true
true
false
Angleški jezik
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2020-04-24 22:11:29
2020-04-24 22:39:21
2023-06-09 03:36:46
0000-00-00 00:00:00
2018
0
0
6
862
91
2018
0000-00-00
Zaloznikova
NiDoloceno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
5616379
10.3847/1538-4357/aac9c8
URN:SI:UNG:REP:84VDGRT8
Abbasi_2018_ApJ_862_91.pdf
Abbasi_2018_ApJ_862_91.pdf
1
7489D401FA779F1F48AC50E350514436
1c571391e60cbe1f41c6726cd45c368773d2f70661eb0e76e63324dfcb791651
751794e2-05cf-11ee-9c48-5ef991fed68f
https://repozitorij.ung.si/Dokument.php?lang=slv&id=19382
Univerza v Novi Gorici
0
0
0