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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astrophysical Journal

ISSN

0004-637X

e-ISSN

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Svazek periodika

794

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

15

Strana od-do

"172-1"-"172-15"

Kód UT WoS článku

000343085800076

EID výsledku v databázi Scopus

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