Correlation of the highest-energy cosmic rays with nearby extragalactic objects

Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 × 10 19 electron volts and the positions of active galactic nuclei (AGN) lying within ∼75 megaparsecs. We rejected the hypot...

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Autor principal: Abraham, J.
Formato: JOUR
Materias:
correlation
cosmic ray
electromagnetic radiation
electron
hypothesis testing
spatial distribution
article
correlation analysis
cosmic radiation
energy yield
magnetic field
priority journal
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00368075_v318_n5852_p938_Abraham
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00368075_v318_n5852_p938_Abraham
record_format dspace
spelling todo:paper_00368075_v318_n5852_p938_Abraham2023-10-03T14:47:51Z Correlation of the highest-energy cosmic rays with nearby extragalactic objects Abraham, J. correlation cosmic ray electromagnetic radiation electron hypothesis testing spatial distribution article correlation analysis cosmic radiation energy yield magnetic field priority journal Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 × 10 19 electron volts and the positions of active galactic nuclei (AGN) lying within ∼75 megaparsecs. We rejected the hypothesis of an isotropic distribution of these cosmic rays with at least a 99% confidence level from a prescribed a priori test. The correlation we observed is compatible with the hypothesis that the highest-energy particles originate from nearby extragalactic sources whose flux has not been substantially reduced by interaction with the cosmic background radiation. AGN or objects having a similar spatial distribution are possible sources. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00368075_v318_n5852_p938_Abraham
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic correlation
cosmic ray
electromagnetic radiation
electron
hypothesis testing
spatial distribution
article
correlation analysis
cosmic radiation
energy yield
magnetic field
priority journal
spellingShingle correlation
cosmic ray
electromagnetic radiation
electron
hypothesis testing
spatial distribution
article
correlation analysis
cosmic radiation
energy yield
magnetic field
priority journal
Abraham, J.
Correlation of the highest-energy cosmic rays with nearby extragalactic objects
topic_facet correlation
cosmic ray
electromagnetic radiation
electron
hypothesis testing
spatial distribution
article
correlation analysis
cosmic radiation
energy yield
magnetic field
priority journal
description Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 × 10 19 electron volts and the positions of active galactic nuclei (AGN) lying within ∼75 megaparsecs. We rejected the hypothesis of an isotropic distribution of these cosmic rays with at least a 99% confidence level from a prescribed a priori test. The correlation we observed is compatible with the hypothesis that the highest-energy particles originate from nearby extragalactic sources whose flux has not been substantially reduced by interaction with the cosmic background radiation. AGN or objects having a similar spatial distribution are possible sources.
format JOUR
author Abraham, J.
author_facet Abraham, J.
author_sort Abraham, J.
title Correlation of the highest-energy cosmic rays with nearby extragalactic objects
title_short Correlation of the highest-energy cosmic rays with nearby extragalactic objects
title_full Correlation of the highest-energy cosmic rays with nearby extragalactic objects
title_fullStr Correlation of the highest-energy cosmic rays with nearby extragalactic objects
title_full_unstemmed Correlation of the highest-energy cosmic rays with nearby extragalactic objects
title_sort correlation of the highest-energy cosmic rays with nearby extragalactic objects
url http://hdl.handle.net/20.500.12110/paper_00368075_v318_n5852_p938_Abraham
work_keys_str_mv AT abrahamj correlationofthehighestenergycosmicrayswithnearbyextragalacticobjects
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