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 theSouthern sky using data from the IceCube detector. Between 2007 June and 2008 March, the partially deployed IceCube detector was operated in a configuration with 1320...
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Language: | English |
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Institute of Physics Publishing.
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Online Access: | http://hdl.handle.net/2440/76750 https://doi.org/10.1088/2041-8205/718/2/L194 |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/76750 2023-12-24T10:11:31+01:00 Measurement of the anisotropy of cosmic-ray arrival directions with IceCube Abbasi, R. Hill, G. 2010 http://hdl.handle.net/2440/76750 https://doi.org/10.1088/2041-8205/718/2/L194 en eng Institute of Physics Publishing. Letters of the Astrophysical Journal, 2010; 718(2):194-198 2041-8205 2041-8213 http://hdl.handle.net/2440/76750 doi:10.1088/2041-8205/718/2/L194 © 2010 The American Astronomical Society. http://dx.doi.org/10.1088/2041-8205/718/2/l194 Cosmic rays-neutrinos Journal article 2010 ftunivadelaidedl https://doi.org/10.1088/2041-8205/718/2/L19410.1088/2041-8205/718/2/l194 2023-11-27T23:17:15Z We report the first observation of an anisotropy in the arrival direction of cosmic rays with energies in the multi-TeV region in theSouthern sky using data from the IceCube detector. Between 2007 June and 2008 March, the partially deployed IceCube detector was operated in a configuration with 1320 digital optical sensors distributed over22 strings at depths between 1450 and 2450 m 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 aresuitable for high-statistics studies of cosmic rays in the southern sky. The data include 4.3 billion muons produced by downward-going cosmic-ray interactions in the atmosphere; these events were reconstructed with a median angular resolution of 3° and a median energy of ∼20 TeV. Their arrival direction distribution exhibits an anisotropy in right ascension with a first-harmonic amplitude of (6.4±0.2 stat.±0.8 syst.) × 10-4. © 2010 The American Astronomical Society. R. Abbasi . G. C. Hill . et al. (IceCube Collaboration) Article in Journal/Newspaper Antarc* Antarctic The University of Adelaide: Digital Library Antarctic The Antarctic The Astrophysical Journal 718 2 L194 L198 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Cosmic rays-neutrinos |
spellingShingle |
Cosmic rays-neutrinos Abbasi, R. Hill, G. Measurement of the anisotropy of cosmic-ray arrival directions with IceCube |
topic_facet |
Cosmic rays-neutrinos |
description |
We report the first observation of an anisotropy in the arrival direction of cosmic rays with energies in the multi-TeV region in theSouthern sky using data from the IceCube detector. Between 2007 June and 2008 March, the partially deployed IceCube detector was operated in a configuration with 1320 digital optical sensors distributed over22 strings at depths between 1450 and 2450 m 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 aresuitable for high-statistics studies of cosmic rays in the southern sky. The data include 4.3 billion muons produced by downward-going cosmic-ray interactions in the atmosphere; these events were reconstructed with a median angular resolution of 3° and a median energy of ∼20 TeV. Their arrival direction distribution exhibits an anisotropy in right ascension with a first-harmonic amplitude of (6.4±0.2 stat.±0.8 syst.) × 10-4. © 2010 The American Astronomical Society. R. Abbasi . G. C. Hill . et al. (IceCube Collaboration) |
format |
Article in Journal/Newspaper |
author |
Abbasi, R. Hill, G. |
author_facet |
Abbasi, R. Hill, G. |
author_sort |
Abbasi, R. |
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 |
publisher |
Institute of Physics Publishing. |
publishDate |
2010 |
url |
http://hdl.handle.net/2440/76750 https://doi.org/10.1088/2041-8205/718/2/L194 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
http://dx.doi.org/10.1088/2041-8205/718/2/l194 |
op_relation |
Letters of the Astrophysical Journal, 2010; 718(2):194-198 2041-8205 2041-8213 http://hdl.handle.net/2440/76750 doi:10.1088/2041-8205/718/2/L194 |
op_rights |
© 2010 The American Astronomical Society. |
op_doi |
https://doi.org/10.1088/2041-8205/718/2/L19410.1088/2041-8205/718/2/l194 |
container_title |
The Astrophysical Journal |
container_volume |
718 |
container_issue |
2 |
container_start_page |
L194 |
op_container_end_page |
L198 |
_version_ |
1786166173711204352 |