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...
Published in: | The Astrophysical Journal |
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Language: | English |
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2013
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ftdesyvdb:oai:bib-pubdb1.desy.de:166368 2023-05-15T18:22:36+02:00 OBSERVATION OF COSMIC-RAY ANISOTROPY WITH THE ICETOP AIR SHOWER ARRAY Aartsen, M. G. Abbasi, R. Bai, X. Hallgren, A. Halzen, F. Hanson, K. Heereman, D. Heimann, P. Heinen, D. Helbing, K. Hellauer, R. Hickford, S. Hill, G. C. Baker, M. Hoffman, K. D. Hoffmann, R. Homeier, A. Hoshina, K. Huelsnitz, W. Hulth, P. O. Hultqvist, K. Hussain, S. Ishihara, A. Jacobi, E. Barwick, S. W. Jacobsen, J. Japaridze, G. S. Jlelati, O. Kappes, A. Karg, T. Karle, A. Kiryluk, J. Kislat, F. Kläs, J. Klein, S. R. Baum, V. Köhne, J.-H. Kohnen, G. Kolanoski, H. Köpke, L. Kopper, C. Kopper, S. Koskinen, D. J. Kowalski, M. Krasberg, M. Kroll, G. Bay, R. Kunnen, J. Kurahashi, N. Kuwabara, T. DE 2013 https://bib-pubdb1.desy.de/record/166368 https://bib-pubdb1.desy.de/search?p=id:%22DESY-2014-01281%22 eng eng Univ.11032 info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/765/1/55 info:eu-repo/semantics/altIdentifier/issn/1538-4357 info:eu-repo/semantics/altIdentifier/wos/WOS:000314957900055 info:eu-repo/semantics/altIdentifier/issn/0004-637x info:eu-repo/semantics/altIdentifier/doi/10.3204/DESY-2014-01281 https://bib-pubdb1.desy.de/record/166368 https://bib-pubdb1.desy.de/search?p=id:%22DESY-2014-01281%22 info:eu-repo/semantics/openAccess The astrophysical journal 765(1), 55 (2013). doi:10.1088/0004-637X/765/1/55 info:eu-repo/classification/ddc/520 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftdesyvdb https://doi.org/10.1088/0004-637X/765/1/55 https://doi.org/10.3204/DESY-2014-01281 2022-06-30T20:10:29Z 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. Article in Journal/Newspaper South pole DESY Publication Database (PUBDB) South Pole The Astrophysical Journal 765 1 55 |
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DESY Publication Database (PUBDB) |
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English |
topic |
info:eu-repo/classification/ddc/520 |
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info:eu-repo/classification/ddc/520 Aartsen, M. G. Abbasi, R. Bai, X. Hallgren, A. Halzen, F. Hanson, K. Heereman, D. Heimann, P. Heinen, D. Helbing, K. Hellauer, R. Hickford, S. Hill, G. C. Baker, M. Hoffman, K. D. Hoffmann, R. Homeier, A. Hoshina, K. Huelsnitz, W. Hulth, P. O. Hultqvist, K. Hussain, S. Ishihara, A. Jacobi, E. Barwick, S. W. Jacobsen, J. Japaridze, G. S. Jlelati, O. Kappes, A. Karg, T. Karle, A. Kiryluk, J. Kislat, F. Kläs, J. Klein, S. R. Baum, V. Köhne, J.-H. Kohnen, G. Kolanoski, H. Köpke, L. Kopper, C. Kopper, S. Koskinen, D. J. Kowalski, M. Krasberg, M. Kroll, G. Bay, R. Kunnen, J. Kurahashi, N. Kuwabara, T. OBSERVATION OF COSMIC-RAY ANISOTROPY WITH THE ICETOP AIR SHOWER ARRAY |
topic_facet |
info:eu-repo/classification/ddc/520 |
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. |
format |
Article in Journal/Newspaper |
author |
Aartsen, M. G. Abbasi, R. Bai, X. Hallgren, A. Halzen, F. Hanson, K. Heereman, D. Heimann, P. Heinen, D. Helbing, K. Hellauer, R. Hickford, S. Hill, G. C. Baker, M. Hoffman, K. D. Hoffmann, R. Homeier, A. Hoshina, K. Huelsnitz, W. Hulth, P. O. Hultqvist, K. Hussain, S. Ishihara, A. Jacobi, E. Barwick, S. W. Jacobsen, J. Japaridze, G. S. Jlelati, O. Kappes, A. Karg, T. Karle, A. Kiryluk, J. Kislat, F. Kläs, J. Klein, S. R. Baum, V. Köhne, J.-H. Kohnen, G. Kolanoski, H. Köpke, L. Kopper, C. Kopper, S. Koskinen, D. J. Kowalski, M. Krasberg, M. Kroll, G. Bay, R. Kunnen, J. Kurahashi, N. Kuwabara, T. |
author_facet |
Aartsen, M. G. Abbasi, R. Bai, X. Hallgren, A. Halzen, F. Hanson, K. Heereman, D. Heimann, P. Heinen, D. Helbing, K. Hellauer, R. Hickford, S. Hill, G. C. Baker, M. Hoffman, K. D. Hoffmann, R. Homeier, A. Hoshina, K. Huelsnitz, W. Hulth, P. O. Hultqvist, K. Hussain, S. Ishihara, A. Jacobi, E. Barwick, S. W. Jacobsen, J. Japaridze, G. S. Jlelati, O. Kappes, A. Karg, T. Karle, A. Kiryluk, J. Kislat, F. Kläs, J. Klein, S. R. Baum, V. Köhne, J.-H. Kohnen, G. Kolanoski, H. Köpke, L. Kopper, C. Kopper, S. Koskinen, D. J. Kowalski, M. Krasberg, M. Kroll, G. Bay, R. Kunnen, J. Kurahashi, N. Kuwabara, T. |
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 |
publisher |
Univ.11032 |
publishDate |
2013 |
url |
https://bib-pubdb1.desy.de/record/166368 https://bib-pubdb1.desy.de/search?p=id:%22DESY-2014-01281%22 |
op_coverage |
DE |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
The astrophysical journal 765(1), 55 (2013). doi:10.1088/0004-637X/765/1/55 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/765/1/55 info:eu-repo/semantics/altIdentifier/issn/1538-4357 info:eu-repo/semantics/altIdentifier/wos/WOS:000314957900055 info:eu-repo/semantics/altIdentifier/issn/0004-637x info:eu-repo/semantics/altIdentifier/doi/10.3204/DESY-2014-01281 https://bib-pubdb1.desy.de/record/166368 https://bib-pubdb1.desy.de/search?p=id:%22DESY-2014-01281%22 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1088/0004-637X/765/1/55 https://doi.org/10.3204/DESY-2014-01281 |
container_title |
The Astrophysical Journal |
container_volume |
765 |
container_issue |
1 |
container_start_page |
55 |
_version_ |
1766202012671672320 |