Observation of Cosmic Ray Anisotropy with the IceTop Air Shower Array
We report on the observation of anisotropy in the arrival direction distribution of cosmic rays at PeV energies. The analysis is based on data taken between 2009 and 2012 with the IceTop air shower array at the south pole. IceTop, an integral part of the IceCube detector, is sensitive to cosmic rays...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/141278 2023-05-15T18:22:38+02:00 Observation of Cosmic Ray Anisotropy with the IceTop Air Shower Array Aartsen, M. G. Bechet, Sabrina Bertrand, Daniel Hanson, Kael Heereman von Zuydtwyck, David Meures, Thomas O'Murchadha, Aongus Toscano, Simona 2013 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/141278 https://dipot.ulb.ac.be/dspace/bitstream/2013/141278/3/doi_124594.pdf en eng uri/info:doi/10.1088/0004-637X/765/1/55 uri/info:scp/84874121785 https://dipot.ulb.ac.be/dspace/bitstream/2013/141278/3/doi_124594.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/141278 1 full-text file(s): info:eu-repo/semantics/restrictedAccess The Astrophysical journal, 765 (1 Physique des particules élémentaires astroparticle physics cosmic rays info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2013 ftunivbruxelles 2022-06-12T20:52:09Z We report on the observation of anisotropy in the arrival direction distribution of cosmic rays at PeV energies. The analysis is based on data taken between 2009 and 2012 with the IceTop air shower array at the south pole. IceTop, an integral part of the IceCube detector, is sensitive to cosmic rays between 100 TeV and 1 EeV. With the current size of the IceTop data set, searches for anisotropy at the 10-3 level can, for the first time, be extended to PeV energies. We divide the data set into two parts with median energies of 400 TeV and 2 PeV, respectively. In the low energy band, we observe a strong deficit with an angular size of about 30° and an amplitude of (- 1.58 ± 0.46stat ± 0.52sys) × 10 -3 at a location consistent with previous observations of cosmic rays with the IceCube neutrino detector. The study of the high energy band shows that the anisotropy persists to PeV energies and increases in amplitude to (- 3.11 ± 0.38stat ± 0.96sys) × 10 -3. © 2013. The American Astronomical Society. All rights reserved. 0 IceCube Collaboration SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper South pole DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) South Pole |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Physique des particules élémentaires astroparticle physics cosmic rays |
spellingShingle |
Physique des particules élémentaires astroparticle physics cosmic rays Aartsen, M. G. Bechet, Sabrina Bertrand, Daniel Hanson, Kael Heereman von Zuydtwyck, David Meures, Thomas O'Murchadha, Aongus Toscano, Simona Observation of Cosmic Ray Anisotropy with the IceTop Air Shower Array |
topic_facet |
Physique des particules élémentaires astroparticle physics cosmic rays |
description |
We report on the observation of anisotropy in the arrival direction distribution of cosmic rays at PeV energies. The analysis is based on data taken between 2009 and 2012 with the IceTop air shower array at the south pole. IceTop, an integral part of the IceCube detector, is sensitive to cosmic rays between 100 TeV and 1 EeV. With the current size of the IceTop data set, searches for anisotropy at the 10-3 level can, for the first time, be extended to PeV energies. We divide the data set into two parts with median energies of 400 TeV and 2 PeV, respectively. In the low energy band, we observe a strong deficit with an angular size of about 30° and an amplitude of (- 1.58 ± 0.46stat ± 0.52sys) × 10 -3 at a location consistent with previous observations of cosmic rays with the IceCube neutrino detector. The study of the high energy band shows that the anisotropy persists to PeV energies and increases in amplitude to (- 3.11 ± 0.38stat ± 0.96sys) × 10 -3. © 2013. The American Astronomical Society. All rights reserved. 0 IceCube Collaboration SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Aartsen, M. G. Bechet, Sabrina Bertrand, Daniel Hanson, Kael Heereman von Zuydtwyck, David Meures, Thomas O'Murchadha, Aongus Toscano, Simona |
author_facet |
Aartsen, M. G. Bechet, Sabrina Bertrand, Daniel Hanson, Kael Heereman von Zuydtwyck, David Meures, Thomas O'Murchadha, Aongus Toscano, Simona |
author_sort |
Aartsen, M. G. |
title |
Observation of Cosmic Ray Anisotropy with the IceTop Air Shower Array |
title_short |
Observation of Cosmic Ray Anisotropy with the IceTop Air Shower Array |
title_full |
Observation of Cosmic Ray Anisotropy with the IceTop Air Shower Array |
title_fullStr |
Observation of Cosmic Ray Anisotropy with the IceTop Air Shower Array |
title_full_unstemmed |
Observation of Cosmic Ray Anisotropy with the IceTop Air Shower Array |
title_sort |
observation of cosmic ray anisotropy with the icetop air shower array |
publishDate |
2013 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/141278 https://dipot.ulb.ac.be/dspace/bitstream/2013/141278/3/doi_124594.pdf |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
The Astrophysical journal, 765 (1 |
op_relation |
uri/info:doi/10.1088/0004-637X/765/1/55 uri/info:scp/84874121785 https://dipot.ulb.ac.be/dspace/bitstream/2013/141278/3/doi_124594.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/141278 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/restrictedAccess |
_version_ |
1766202043325743104 |