Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube
We report the first observation of an anisotropy in the arrival direction of cosmic rays with energies in the multi TeV region in the Southern sky using data from the IceCube detector. Between June 2007 and March 2008, the partially-deployed IceCube detector was operated in a configuration with 1320...
Published in: | The Astrophysical Journal |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2010
|
Subjects: | |
Online Access: | https://curis.ku.dk/portal/da/publications/measurement-of-the-anisotropy-of-cosmic-ray-arrival-directions-with-icecube(7dc50450-49d0-4a82-8f2b-d881db132751).html https://doi.org/10.1088/2041-8205/718/2/L194 |
id |
ftcopenhagenunip:oai:pure.atira.dk:publications/7dc50450-49d0-4a82-8f2b-d881db132751 |
---|---|
record_format |
openpolar |
spelling |
ftcopenhagenunip:oai:pure.atira.dk:publications/7dc50450-49d0-4a82-8f2b-d881db132751 2024-05-19T07:32:02+00:00 Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube IceCube Collaboration, The Abbasi, R. Abdou, Y. Abu-Zayyad, T. Admas, J. Koskinen, David Jason 2010-05-17 https://curis.ku.dk/portal/da/publications/measurement-of-the-anisotropy-of-cosmic-ray-arrival-directions-with-icecube(7dc50450-49d0-4a82-8f2b-d881db132751).html https://doi.org/10.1088/2041-8205/718/2/L194 eng eng info:eu-repo/semantics/restrictedAccess IceCube Collaboration , T , Abbasi , R , Abdou , Y , Abu-Zayyad , T , Admas , J & Koskinen , D J 2010 , ' Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube ' , Astrophysics Journal Letters , vol. 718 , no. 2 , L194 . https://doi.org/10.1088/2041-8205/718/2/L194 astro-ph.HE article 2010 ftcopenhagenunip https://doi.org/10.1088/2041-8205/718/2/L194 2024-05-02T00:33:08Z We report the first observation of an anisotropy in the arrival direction of cosmic rays with energies in the multi TeV region in the Southern sky using data from the IceCube detector. Between June 2007 and March 2008, the partially-deployed IceCube detector was operated in a configuration with 1320 digital optical sensors distributed over 22 strings at depths between 1450 and 2450 meters inside the Antarctic ice. IceCube is a neutrino detector, but the data are dominated by a large background of cosmic ray muons. Therefore, the background data are suitable for high-statistics studies of cosmic rays in the Southern sky. The data include 4.3 billion muons produced by downgoing cosmic ray interactions in the atmosphere; these events were reconstructed with a median angular resolution of 3 degrees and a median energy of $\sim20$ TeV. Their arrival direction distribution exhibits an anisotropy in right ascension with a first harmonic amplitude of $(6.4\pm0.2 $stat$. \pm 0.8 $syst$.)\times10^{-4}$. Article in Journal/Newspaper Antarc* Antarctic University of Copenhagen: Research The Astrophysical Journal 718 2 L194 L198 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
astro-ph.HE |
spellingShingle |
astro-ph.HE IceCube Collaboration, The Abbasi, R. Abdou, Y. Abu-Zayyad, T. Admas, J. Koskinen, David Jason Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube |
topic_facet |
astro-ph.HE |
description |
We report the first observation of an anisotropy in the arrival direction of cosmic rays with energies in the multi TeV region in the Southern sky using data from the IceCube detector. Between June 2007 and March 2008, the partially-deployed IceCube detector was operated in a configuration with 1320 digital optical sensors distributed over 22 strings at depths between 1450 and 2450 meters inside the Antarctic ice. IceCube is a neutrino detector, but the data are dominated by a large background of cosmic ray muons. Therefore, the background data are suitable for high-statistics studies of cosmic rays in the Southern sky. The data include 4.3 billion muons produced by downgoing cosmic ray interactions in the atmosphere; these events were reconstructed with a median angular resolution of 3 degrees and a median energy of $\sim20$ TeV. Their arrival direction distribution exhibits an anisotropy in right ascension with a first harmonic amplitude of $(6.4\pm0.2 $stat$. \pm 0.8 $syst$.)\times10^{-4}$. |
format |
Article in Journal/Newspaper |
author |
IceCube Collaboration, The Abbasi, R. Abdou, Y. Abu-Zayyad, T. Admas, J. Koskinen, David Jason |
author_facet |
IceCube Collaboration, The Abbasi, R. Abdou, Y. Abu-Zayyad, T. Admas, J. Koskinen, David Jason |
author_sort |
IceCube Collaboration, The |
title |
Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube |
title_short |
Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube |
title_full |
Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube |
title_fullStr |
Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube |
title_full_unstemmed |
Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube |
title_sort |
measurement of the anisotropy of cosmic ray arrival directions with icecube |
publishDate |
2010 |
url |
https://curis.ku.dk/portal/da/publications/measurement-of-the-anisotropy-of-cosmic-ray-arrival-directions-with-icecube(7dc50450-49d0-4a82-8f2b-d881db132751).html https://doi.org/10.1088/2041-8205/718/2/L194 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
IceCube Collaboration , T , Abbasi , R , Abdou , Y , Abu-Zayyad , T , Admas , J & Koskinen , D J 2010 , ' Measurement of the Anisotropy of Cosmic Ray Arrival Directions with IceCube ' , Astrophysics Journal Letters , vol. 718 , no. 2 , L194 . https://doi.org/10.1088/2041-8205/718/2/L194 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1088/2041-8205/718/2/L194 |
container_title |
The Astrophysical Journal |
container_volume |
718 |
container_issue |
2 |
container_start_page |
L194 |
op_container_end_page |
L198 |
_version_ |
1799469978196377600 |