The distribution of ultrahigh-energy cosmic rays along the supergalactic plane measured at the Pierre Auger Observatory

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00636950" target="_blank" >RIV/68378271:_____/25:00636950 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/25:10510619 RIV/61989592:15310/25:73633556

Result on the web

<a href="https://hdl.handle.net/11104/0370601" target="_blank" >https://hdl.handle.net/11104/0370601</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/adbdc5" target="_blank" >10.3847/1538-4357/adbdc5</a>

Result language

angličtina

Original language name

The distribution of ultrahigh-energy cosmic rays along the supergalactic plane measured at the Pierre Auger Observatory

Original language description

Ultrahigh-energy cosmic rays are known to be mainly of extragalactic origin, and their propagation is limited by energy losses, so their arrival directions are expected to correlate with the large-scale structure of the local Universe. In this work, we investigate the possible presence of intermediate-scale excesses in the flux of the most energetic cosmic rays from the direction of the supergalactic plane region using events with energies above 20 EeV recorded with the surface detector array of the Pierre Auger Observatory up to 2022 December 31, with a total exposure of 135,000 km2 sr yr. The strongest indication for an excess that we find, with a posttrial significance of 3.1 sigma, is in the Centaurus region, as in our previous reports, and it extends down to lower energies than previously studied. We do not find any strong hints of excesses from any other region of the supergalactic plane at the same angular scale. In particular, our results do not confirm the reports by the Telescope Array Collaboration of excesses from two regions in the Northern Hemisphere at the edge of the field of view of the Pierre Auger Observatory. With a comparable integrated exposure over these regions, our results there are in good agreement with the expectations from an isotropic distribution.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Astrophysical Journal

ISSN

0004-637X

e-ISSN

1538-4357

Volume of the periodical

984

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

123

UT code for WoS article

001482501000001

EID of the result in the Scopus database

2-s2.0-105005884415