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 x 10(19) electron volts and the positions of active galactic nuclei (AGN) lying within approximately 75 megaparsecs. We reje...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2007
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| _version_ | 1826277185924628480 |
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| author | Abraham, J Abreu, P Aglietta, M Aguirre, C Allard, D Allekotte, I Allen, J Allison, P Alvarez, C Alvarez-Muñiz, J Ambrosio, M Anchordoqui, L Andringa, S Anzalone, A Aramo, C Argirò, S Arisaka, K Armengaud, E Arneodo, F Arqueros, F Asch, T Asorey, H Assis, P Atulugama, B Aublin, J |
| author_facet | Abraham, J Abreu, P Aglietta, M Aguirre, C Allard, D Allekotte, I Allen, J Allison, P Alvarez, C Alvarez-Muñiz, J Ambrosio, M Anchordoqui, L Andringa, S Anzalone, A Aramo, C Argirò, S Arisaka, K Armengaud, E Arneodo, F Arqueros, F Asch, T Asorey, H Assis, P Atulugama, B Aublin, J |
| author_sort | Abraham, J |
| collection | OXFORD |
| 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 x 10(19) electron volts and the positions of active galactic nuclei (AGN) lying within approximately 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. |
| first_indexed | 2024-03-06T23:25:06Z |
| format | Journal article |
| id | oxford-uuid:6a196052-9966-4b6f-97d6-85eba9a189da |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:25:06Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:6a196052-9966-4b6f-97d6-85eba9a189da2022-03-26T18:55:19ZCorrelation of the highest-energy cosmic rays with nearby extragalactic objects.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6a196052-9966-4b6f-97d6-85eba9a189daEnglishSymplectic Elements at Oxford2007Abraham, JAbreu, PAglietta, MAguirre, CAllard, DAllekotte, IAllen, JAllison, PAlvarez, CAlvarez-Muñiz, JAmbrosio, MAnchordoqui, LAndringa, SAnzalone, AAramo, CArgirò, SArisaka, KArmengaud, EArneodo, FArqueros, FAsch, TAsorey, HAssis, PAtulugama, BAublin, JUsing 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 x 10(19) electron volts and the positions of active galactic nuclei (AGN) lying within approximately 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. |
| spellingShingle | Abraham, J Abreu, P Aglietta, M Aguirre, C Allard, D Allekotte, I Allen, J Allison, P Alvarez, C Alvarez-Muñiz, J Ambrosio, M Anchordoqui, L Andringa, S Anzalone, A Aramo, C Argirò, S Arisaka, K Armengaud, E Arneodo, F Arqueros, F Asch, T Asorey, H Assis, P Atulugama, B Aublin, J Correlation of the highest-energy cosmic rays with nearby extragalactic objects. |
| title | 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_short | Correlation of the highest-energy cosmic rays with nearby extragalactic objects. |
| title_sort | correlation of the highest energy cosmic rays with nearby extragalactic objects |
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