Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) eV at the Pierre Auger Observatory and the Teleskopy Array

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33151180" target="_blank" >RIV/61989592:15310/14:33151180 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/0004-637X/794/2/172/pdf/0004-637X_794_2_172.pdf" target="_blank" >http://iopscience.iop.org/0004-637X/794/2/172/pdf/0004-637X_794_2_172.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0004-637X/794/2/172" target="_blank" >10.1088/0004-637X/794/2/172</a>

Result language
angličtina
Original language name
Searches for large-scale anisotropy in the arrival directions of cosmic rays detected above energy of 10(19) eV at the Pierre Auger Observatory and the Teleskopy Array
Original language description
Spherical harmonic moments are well-suited for capturing anisotropy at any scale in the flux of cosmic rays. An unambiguous measurement of the full set of spherical harmonic coefficients requires full-sky coverage. This can be achieved by combining datafrom observatories located in both the northern and southern hemispheres. To this end, a joint analysis using data recorded at the Telescope Array and the Pierre Auger Observatory above 10(19) eV is presented in this work. The resulting multipolar expansion of the flux of cosmic rays allows us to perform a series of anisotropy searches, and in particular to report on the angular power spectrum of cosmic rays above 10(19) eV. No significant deviation from isotropic expectations is found throughout the analyses performed. Upper limits on the amplitudes of the dipole and quadrupole moments are derived as a function of the direction in the sky, varying between 7% and 13% for the dipole and between 7% and 10% for a symmetric quadrupole.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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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)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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