Evidence of intermediate-scale energy spectrum anisotropy in the northern hemisphere from Telescope Array
Abstract
Evidence of an energy dependent intermediate-scale anisotropy has been found in the arrival directions of ultra-high energy cosmic rays in the northern hemisphere, using 7 years of TA surface detector data. The previously reported ``hot spot" excess E ≥ 10^19.75 EeV is found to correspond to a deficit, or ``cold spot," of events for 10^19.2≤ E < 10^19.75 EeV. This feature suggests energy dependent magnetic deflection of cosmic-rays. The global post-trial significance of the energy spectrum deviation is found to be 3.74σ.
Keywords
high energy;cosmic rays;anisotropy;magnetic deflection;
Data
| Language: | English |
|---|---|
| Year of publishing: | 2017 |
| Typology: | 1.08 - Published Scientific Conference Contribution |
| Organization: | UNG - University of Nova Gorica |
| UDC: | 52 |
| COBISS: |
12897283
|
| ISSN: | 1824-8039 |
| Views: | 2095 |
| Downloads: | 73 |
| Average score: | 0 (0 votes) |
| Metadata: |
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Other data
| URN: | URN:SI:UNG |
|---|---|
| Type (COBISS): | Not categorized |
| Pages: | str. 1-8 |
| Chronology: | 2017 |
| DOI: | 10.22323/1.301.0513 |
| ID: | 11596555 |
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