Observation of cosmic-ray anisotropy with the icetop air shower array

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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Main Authors: Aartsen, M., Abbasi, R., Abdou, Y., Ackermann, M., Adams, J., Aguilar, J., Ahlers, M., Altmann, D., Andeen, K., Auffenberg, J., Bai, X., Baker, M., Barwick, S., Baum, V., Bay, R., Beattie, K., Beatty, J., Bechet, S., Tjus, J., Becker, K., Bell, M., Benabderrahmane, M., Benzvi, S., Berdermann, J., Berghaus, P., Berley, D., Bernardini, E., Bertrand, D., Besson, D., Bindig, D., Bissok, M., Blaufuss, E., Blumenthal, J., Boersma, D., Bohaichuk, S., Bohm, C., Bose, D., Böser, S., Botner, O., Brayeur, L., Brown, A., Bruijn, R., Brunner, J., Carson, Michael, Casey, J., Casier, M., Chirkin, D., Christy, B., Clark, K., Clevermann, F., Cohen, S., Cowen, D., Silva, A., Danninger, M., Daughhetee, J., Davis, J., De Clercq, C., De Ridder, S., Descamps, F., Desiati, P., De Vries-Uiterweerd, G., Deyoung, T., Díaz-Vélez, J., Dreyer, J., Dumm, J., Dunkman, M., Eagan, R., Eisch, J., Ellsworth, R., Engdegård, O., Euler, S., Evenson, P., Fadiran, O., Fazely, A., Fedynitch, A., Feintzeig, J., Feusels, T., Filimonov, K., Finley, C., Fischer-Wasels, T., Flis, S., Franckowiak, A., Franke, R., Frantzen, K., Fuchs, T., Gaisser, T., Gallagher, J., Gerhardt, L., Gladstone, L., Glüsenkamp, T., Goldschmidt, A., Golup, G., Goodman, J., Góra, D., Grant, D.
Format: Journal Article
Published: 2013
Online Access:http://hdl.handle.net/20.500.11937/4180
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author Aartsen, M.
Abbasi, R.
Abdou, Y.
Ackermann, M.
Adams, J.
Aguilar, J.
Ahlers, M.
Altmann, D.
Andeen, K.
Auffenberg, J.
Bai, X.
Baker, M.
Barwick, S.
Baum, V.
Bay, R.
Beattie, K.
Beatty, J.
Bechet, S.
Tjus, J.
Becker, K.
Bell, M.
Benabderrahmane, M.
Benzvi, S.
Berdermann, J.
Berghaus, P.
Berley, D.
Bernardini, E.
Bertrand, D.
Besson, D.
Bindig, D.
Bissok, M.
Blaufuss, E.
Blumenthal, J.
Boersma, D.
Bohaichuk, S.
Bohm, C.
Bose, D.
Böser, S.
Botner, O.
Brayeur, L.
Brown, A.
Bruijn, R.
Brunner, J.
Carson, Michael
Casey, J.
Casier, M.
Chirkin, D.
Christy, B.
Clark, K.
Clevermann, F.
Cohen, S.
Cowen, D.
Silva, A.
Danninger, M.
Daughhetee, J.
Davis, J.
De Clercq, C.
De Ridder, S.
Descamps, F.
Desiati, P.
De Vries-Uiterweerd, G.
Deyoung, T.
Díaz-Vélez, J.
Dreyer, J.
Dumm, J.
Dunkman, M.
Eagan, R.
Eisch, J.
Ellsworth, R.
Engdegård, O.
Euler, S.
Evenson, P.
Fadiran, O.
Fazely, A.
Fedynitch, A.
Feintzeig, J.
Feusels, T.
Filimonov, K.
Finley, C.
Fischer-Wasels, T.
Flis, S.
Franckowiak, A.
Franke, R.
Frantzen, K.
Fuchs, T.
Gaisser, T.
Gallagher, J.
Gerhardt, L.
Gladstone, L.
Glüsenkamp, T.
Goldschmidt, A.
Golup, G.
Goodman, J.
Góra, D.
Grant, D.
author_facet Aartsen, M.
Abbasi, R.
Abdou, Y.
Ackermann, M.
Adams, J.
Aguilar, J.
Ahlers, M.
Altmann, D.
Andeen, K.
Auffenberg, J.
Bai, X.
Baker, M.
Barwick, S.
Baum, V.
Bay, R.
Beattie, K.
Beatty, J.
Bechet, S.
Tjus, J.
Becker, K.
Bell, M.
Benabderrahmane, M.
Benzvi, S.
Berdermann, J.
Berghaus, P.
Berley, D.
Bernardini, E.
Bertrand, D.
Besson, D.
Bindig, D.
Bissok, M.
Blaufuss, E.
Blumenthal, J.
Boersma, D.
Bohaichuk, S.
Bohm, C.
Bose, D.
Böser, S.
Botner, O.
Brayeur, L.
Brown, A.
Bruijn, R.
Brunner, J.
Carson, Michael
Casey, J.
Casier, M.
Chirkin, D.
Christy, B.
Clark, K.
Clevermann, F.
Cohen, S.
Cowen, D.
Silva, A.
Danninger, M.
Daughhetee, J.
Davis, J.
De Clercq, C.
De Ridder, S.
Descamps, F.
Desiati, P.
De Vries-Uiterweerd, G.
Deyoung, T.
Díaz-Vélez, J.
Dreyer, J.
Dumm, J.
Dunkman, M.
Eagan, R.
Eisch, J.
Ellsworth, R.
Engdegård, O.
Euler, S.
Evenson, P.
Fadiran, O.
Fazely, A.
Fedynitch, A.
Feintzeig, J.
Feusels, T.
Filimonov, K.
Finley, C.
Fischer-Wasels, T.
Flis, S.
Franckowiak, A.
Franke, R.
Frantzen, K.
Fuchs, T.
Gaisser, T.
Gallagher, J.
Gerhardt, L.
Gladstone, L.
Glüsenkamp, T.
Goldschmidt, A.
Golup, G.
Goodman, J.
Góra, D.
Grant, D.
author_sort Aartsen, M.
building Curtin Institutional Repository
collection Online Access
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.
first_indexed 2025-11-14T06:01:33Z
format Journal Article
id curtin-20.500.11937-4180
institution Curtin University Malaysia
institution_category Local University
last_indexed 2025-11-14T06:01:33Z
publishDate 2013
recordtype eprints
repository_type Digital Repository
spelling curtin-20.500.11937-41802023-02-22T06:24:16Z Observation of cosmic-ray anisotropy with the icetop air shower array Aartsen, M. Abbasi, R. Abdou, Y. Ackermann, M. Adams, J. Aguilar, J. Ahlers, M. Altmann, D. Andeen, K. Auffenberg, J. Bai, X. Baker, M. Barwick, S. Baum, V. Bay, R. Beattie, K. Beatty, J. Bechet, S. Tjus, J. Becker, K. Bell, M. Benabderrahmane, M. Benzvi, S. Berdermann, J. Berghaus, P. Berley, D. Bernardini, E. Bertrand, D. Besson, D. Bindig, D. Bissok, M. Blaufuss, E. Blumenthal, J. Boersma, D. Bohaichuk, S. Bohm, C. Bose, D. Böser, S. Botner, O. Brayeur, L. Brown, A. Bruijn, R. Brunner, J. Carson, Michael Casey, J. Casier, M. Chirkin, D. Christy, B. Clark, K. Clevermann, F. Cohen, S. Cowen, D. Silva, A. Danninger, M. Daughhetee, J. Davis, J. De Clercq, C. De Ridder, S. Descamps, F. Desiati, P. De Vries-Uiterweerd, G. Deyoung, T. Díaz-Vélez, J. Dreyer, J. Dumm, J. Dunkman, M. Eagan, R. Eisch, J. Ellsworth, R. Engdegård, O. Euler, S. Evenson, P. Fadiran, O. Fazely, A. Fedynitch, A. Feintzeig, J. Feusels, T. Filimonov, K. Finley, C. Fischer-Wasels, T. Flis, S. Franckowiak, A. Franke, R. Frantzen, K. Fuchs, T. Gaisser, T. Gallagher, J. Gerhardt, L. Gladstone, L. Glüsenkamp, T. Goldschmidt, A. Golup, G. Goodman, J. Góra, D. Grant, D. 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 Journal Article http://hdl.handle.net/20.500.11937/4180 10.1088/0004-637X/765/1/55 unknown
spellingShingle Aartsen, M.
Abbasi, R.
Abdou, Y.
Ackermann, M.
Adams, J.
Aguilar, J.
Ahlers, M.
Altmann, D.
Andeen, K.
Auffenberg, J.
Bai, X.
Baker, M.
Barwick, S.
Baum, V.
Bay, R.
Beattie, K.
Beatty, J.
Bechet, S.
Tjus, J.
Becker, K.
Bell, M.
Benabderrahmane, M.
Benzvi, S.
Berdermann, J.
Berghaus, P.
Berley, D.
Bernardini, E.
Bertrand, D.
Besson, D.
Bindig, D.
Bissok, M.
Blaufuss, E.
Blumenthal, J.
Boersma, D.
Bohaichuk, S.
Bohm, C.
Bose, D.
Böser, S.
Botner, O.
Brayeur, L.
Brown, A.
Bruijn, R.
Brunner, J.
Carson, Michael
Casey, J.
Casier, M.
Chirkin, D.
Christy, B.
Clark, K.
Clevermann, F.
Cohen, S.
Cowen, D.
Silva, A.
Danninger, M.
Daughhetee, J.
Davis, J.
De Clercq, C.
De Ridder, S.
Descamps, F.
Desiati, P.
De Vries-Uiterweerd, G.
Deyoung, T.
Díaz-Vélez, J.
Dreyer, J.
Dumm, J.
Dunkman, M.
Eagan, R.
Eisch, J.
Ellsworth, R.
Engdegård, O.
Euler, S.
Evenson, P.
Fadiran, O.
Fazely, A.
Fedynitch, A.
Feintzeig, J.
Feusels, T.
Filimonov, K.
Finley, C.
Fischer-Wasels, T.
Flis, S.
Franckowiak, A.
Franke, R.
Frantzen, K.
Fuchs, T.
Gaisser, T.
Gallagher, J.
Gerhardt, L.
Gladstone, L.
Glüsenkamp, T.
Goldschmidt, A.
Golup, G.
Goodman, J.
Góra, D.
Grant, D.
Observation of cosmic-ray anisotropy with the icetop air shower array
title 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_short Observation of cosmic-ray anisotropy with the icetop air shower array
title_sort observation of cosmic-ray anisotropy with the icetop air shower array
url http://hdl.handle.net/20.500.11937/4180

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