All-particle cosmic ray energy spectrum measured with 26 IceTop stations
We report on a measurement of the cosmic ray energy spectrum with the IceTop air shower array, the surface component of the IceCube Neutrino Observatory at the South Pole. The data used in this analysis were taken between June and October, 2007, with 26 surface stations operational at that time, cor...
Published in: | Astroparticle Physics |
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Online Access: | https://doi.org/10.1016/j.astropartphys.2013.01.016 http://infoscience.epfl.ch/record/188876 |
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ftinfoscience:oai:infoscience.tind.io:188876 2023-05-15T18:22:45+02:00 All-particle cosmic ray energy spectrum measured with 26 IceTop stations Abbasi, R. Abdou, Y. Abu-Zayyad, T. Ackermann, M. Adams, J. Aguilar, J. A. Ahlers, M. Altmann, D. Andeen, K. Auffenberg, J. Bai, X. Baker, M. Barwick, S. W. Baum, V. Bay, R. Alba, J. L. Bazo Beattie, K. Beatty, J. J. Bechett, S. Becker, J. K. Becker, K.-H. Bell, M. Benabderrahmane, M. L. Benzvi, S. Berdermann, J. Berghaus, P. Berley, D. Bernardini, E. Bertrand, D. Besson, D. Z. Bindig, D. Bissok, M. Blaufuss, E. Blumenthal, J. Boersma, D. J. Bohm, C. Bose, D. Boeser, S. Botner, O. Brayeur, L. Brown, A. M. Buitink, S. Caballero-Mora, K. S. Carson, M. Casier, M. Chirkin, D. Christy, B. Clevermann, F. Cohen, S. Cowen, D. F. 2013-10-01T07:25:29Z https://doi.org/10.1016/j.astropartphys.2013.01.016 http://infoscience.epfl.ch/record/188876 unknown Amsterdam, Elsevier Science Bv doi:10.1016/j.astropartphys.2013.01.016 ISI:000318322100006 http://infoscience.epfl.ch/record/188876 http://infoscience.epfl.ch/record/188876 Text 2013 ftinfoscience https://doi.org/10.1016/j.astropartphys.2013.01.016 2023-02-13T22:15:54Z We report on a measurement of the cosmic ray energy spectrum with the IceTop air shower array, the surface component of the IceCube Neutrino Observatory at the South Pole. The data used in this analysis were taken between June and October, 2007, with 26 surface stations operational at that time, corresponding to about one third of the final array. The fiducial area used in this analysis was 0.122 km(2). The analysis investigated the energy spectrum from 1 to 100 PeV measured for three different zenith angle ranges between 0 degrees and 46 degrees. Because of the isotropy of cosmic rays in this energy range the spectra from all zenith angle intervals have to agree. The cosmic-ray energy spectrum was determined under different assumptions on the primary mass composition. Good agreement of spectra in the three zenith angle ranges was found for the assumption of pure proton and a simple two-component model. For zenith angles theta < 30 degrees, where the mass dependence is smallest, the knee in the cosmic ray energy spectrum was observed at about 4 PeV, with a spectral index above the knee of about -3.1. Moreover, an indication of a flattening of the spectrum above 22 PeV was observed. (C) 2013 Elsevier B.V. All rights reserved. Text South pole EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) South Pole Astroparticle Physics 44 40 58 |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
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unknown |
description |
We report on a measurement of the cosmic ray energy spectrum with the IceTop air shower array, the surface component of the IceCube Neutrino Observatory at the South Pole. The data used in this analysis were taken between June and October, 2007, with 26 surface stations operational at that time, corresponding to about one third of the final array. The fiducial area used in this analysis was 0.122 km(2). The analysis investigated the energy spectrum from 1 to 100 PeV measured for three different zenith angle ranges between 0 degrees and 46 degrees. Because of the isotropy of cosmic rays in this energy range the spectra from all zenith angle intervals have to agree. The cosmic-ray energy spectrum was determined under different assumptions on the primary mass composition. Good agreement of spectra in the three zenith angle ranges was found for the assumption of pure proton and a simple two-component model. For zenith angles theta < 30 degrees, where the mass dependence is smallest, the knee in the cosmic ray energy spectrum was observed at about 4 PeV, with a spectral index above the knee of about -3.1. Moreover, an indication of a flattening of the spectrum above 22 PeV was observed. (C) 2013 Elsevier B.V. All rights reserved. |
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Abbasi, R. Abdou, Y. Abu-Zayyad, T. Ackermann, M. Adams, J. Aguilar, J. A. Ahlers, M. Altmann, D. Andeen, K. Auffenberg, J. Bai, X. Baker, M. Barwick, S. W. Baum, V. Bay, R. Alba, J. L. Bazo Beattie, K. Beatty, J. J. Bechett, S. Becker, J. K. Becker, K.-H. Bell, M. Benabderrahmane, M. L. Benzvi, S. Berdermann, J. Berghaus, P. Berley, D. Bernardini, E. Bertrand, D. Besson, D. Z. Bindig, D. Bissok, M. Blaufuss, E. Blumenthal, J. Boersma, D. J. Bohm, C. Bose, D. Boeser, S. Botner, O. Brayeur, L. Brown, A. M. Buitink, S. Caballero-Mora, K. S. Carson, M. Casier, M. Chirkin, D. Christy, B. Clevermann, F. Cohen, S. Cowen, D. F. |
spellingShingle |
Abbasi, R. Abdou, Y. Abu-Zayyad, T. Ackermann, M. Adams, J. Aguilar, J. A. Ahlers, M. Altmann, D. Andeen, K. Auffenberg, J. Bai, X. Baker, M. Barwick, S. W. Baum, V. Bay, R. Alba, J. L. Bazo Beattie, K. Beatty, J. J. Bechett, S. Becker, J. K. Becker, K.-H. Bell, M. Benabderrahmane, M. L. Benzvi, S. Berdermann, J. Berghaus, P. Berley, D. Bernardini, E. Bertrand, D. Besson, D. Z. Bindig, D. Bissok, M. Blaufuss, E. Blumenthal, J. Boersma, D. J. Bohm, C. Bose, D. Boeser, S. Botner, O. Brayeur, L. Brown, A. M. Buitink, S. Caballero-Mora, K. S. Carson, M. Casier, M. Chirkin, D. Christy, B. Clevermann, F. Cohen, S. Cowen, D. F. All-particle cosmic ray energy spectrum measured with 26 IceTop stations |
author_facet |
Abbasi, R. Abdou, Y. Abu-Zayyad, T. Ackermann, M. Adams, J. Aguilar, J. A. Ahlers, M. Altmann, D. Andeen, K. Auffenberg, J. Bai, X. Baker, M. Barwick, S. W. Baum, V. Bay, R. Alba, J. L. Bazo Beattie, K. Beatty, J. J. Bechett, S. Becker, J. K. Becker, K.-H. Bell, M. Benabderrahmane, M. L. Benzvi, S. Berdermann, J. Berghaus, P. Berley, D. Bernardini, E. Bertrand, D. Besson, D. Z. Bindig, D. Bissok, M. Blaufuss, E. Blumenthal, J. Boersma, D. J. Bohm, C. Bose, D. Boeser, S. Botner, O. Brayeur, L. Brown, A. M. Buitink, S. Caballero-Mora, K. S. Carson, M. Casier, M. Chirkin, D. Christy, B. Clevermann, F. Cohen, S. Cowen, D. F. |
author_sort |
Abbasi, R. |
title |
All-particle cosmic ray energy spectrum measured with 26 IceTop stations |
title_short |
All-particle cosmic ray energy spectrum measured with 26 IceTop stations |
title_full |
All-particle cosmic ray energy spectrum measured with 26 IceTop stations |
title_fullStr |
All-particle cosmic ray energy spectrum measured with 26 IceTop stations |
title_full_unstemmed |
All-particle cosmic ray energy spectrum measured with 26 IceTop stations |
title_sort |
all-particle cosmic ray energy spectrum measured with 26 icetop stations |
publisher |
Amsterdam, Elsevier Science Bv |
publishDate |
2013 |
url |
https://doi.org/10.1016/j.astropartphys.2013.01.016 http://infoscience.epfl.ch/record/188876 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
http://infoscience.epfl.ch/record/188876 |
op_relation |
doi:10.1016/j.astropartphys.2013.01.016 ISI:000318322100006 http://infoscience.epfl.ch/record/188876 |
op_doi |
https://doi.org/10.1016/j.astropartphys.2013.01.016 |
container_title |
Astroparticle Physics |
container_volume |
44 |
container_start_page |
40 |
op_container_end_page |
58 |
_version_ |
1766202177623162880 |