Large-scale cosmic-ray anisotropies above 4 EeV measured by the Pierre Auger observatory
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00499841" target="_blank" >RIV/68378271:_____/18:00499841 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/18:10390632 RIV/61989592:15310/18:73590441
Result on the web
<a href="https://doi.org/10.3847/1538-4357/aae689" target="_blank" >https://doi.org/10.3847/1538-4357/aae689</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/aae689" target="_blank" >10.3847/1538-4357/aae689</a>
Alternative languages
Result language
angličtina
Original language name
Large-scale cosmic-ray anisotropies above 4 EeV measured by the Pierre Auger observatory
Original language description
We present a detailed study of the large-scale anisotropies of cosmic rays with energies above 4 EeV measured using the Pierre Auger Observatory. For the energy bins [4, 8] EeV and E >= 8 EeV, the most significant signal is a dipolar modulation in R.A. at energies above 8 EeV, as previously reported. In this paper we further scrutinize the highest-energy bin by splitting it into three energy ranges. We find that the amplitude of the dipole increases with energy above 4 EeV. The growth can be fitted with a power law with index beta = 0.79 +/- 0.19. The directions of the dipoles are consistent with an extragalactic origin of these anisotropies at all the energies considered. Additionally, we have estimated the quadrupolar components of the anisotropy: they are not statistically significant. We discuss the results in the context of the predictions from different models for the distribution of ultrahigh-energy sources and cosmic magnetic fields.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astrophysical Journal
ISSN
0004-637X
e-ISSN
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Volume of the periodical
868
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
1-12
UT code for WoS article
000450221800004
EID of the result in the Scopus database
2-s2.0-85057212039