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

M. G. Aartsen, R. Abbasi, Y. Abdou, M. Ackermann, J. Adams, J. A. Aguilar, M. Ahlers, D. Altmann, K. Andeen, J. Auffenberg, X. Bai, M. Baker, S. W. Barwick, V. Baum, R. Bay, K. Beattie, J. J. Beatty, S. Bechet, J. Becker Tjus, K. H. Becker & 255 others M. Bell, Mohamed Lotfi Benabderrhmane, S. Benzvi, J. Berdermann, P. Berghaus, D. Berley, E. Bernardini, D. Bertrand, D. Z. Besson, D. Bindig, M. Bissok, E. Blaufuss, J. Blumenthal, D. J. Boersma, S. Bohaichuk, C. Bohm, D. Bose, S. Böser, O. Botner, L. Brayeur, A. M. Brown, R. Bruijn, J. Brunner, M. Carson, J. Casey, M. Casier, D. Chirkin, B. Christy, K. Clark, F. Clevermann, S. Cohen, D. F. Cowen, A. H.Cruz Silva, M. Danninger, J. Daughhetee, J. C. Davis, C. De Clercq, S. De Ridder, F. Descamps, P. Desiati, G. De Vries-Uiterweerd, T. Deyoung, J. C. Díaz-Vélez, J. Dreyer, J. P. Dumm, M. Dunkman, R. Eagan, J. Eisch, R. W. Ellsworth, O. Engdegård, S. Euler, P. A. Evenson, O. Fadiran, A. R. Fazely, A. Fedynitch, J. Feintzeig, T. Feusels, K. Filimonov, C. Finley, T. Fischer-Wasels, S. Flis, A. Franckowiak, R. Franke, K. Frantzen, T. Fuchs, T. K. Gaisser, J. Gallagher, L. Gerhardt, L. Gladstone, T. Glüsenkamp, A. Goldschmidt, G. Golup, J. A. Goodman, D. Góra, D. Grant, A. Gross, S. Grullon, M. Gurtner, C. Ha, A. Haj Ismail, A. Hallgren, F. Halzen, K. Hanson, D. Heereman, P. Heimann, D. Heinen, K. Helbing, R. Hellauer, S. Hickford, G. C. Hill, K. D. Hoffman, R. Hoffmann, A. Homeier, K. Hoshina, W. Huelsnitz, P. O. Hulth, K. Hultqvist, S. Hussain, A. Ishihara, E. Jacobi, J. Jacobsen, G. S. Japaridze, O. Jlelati, A. Kappes, T. Karg, A. Karle, J. Kiryluk, F. Kislat, J. Kläs, S. R. Klein, J. H. Köhne, G. Kohnen, H. Kolanoski, L. Köpke, C. Kopper, S. Kopper, D. J. Koskinen, M. Kowalski, M. Krasberg, G. Kroll, J. Kunnen, N. Kurahashi, T. Kuwabara, M. Labare, H. Landsman, M. J. Larson, R. Lauer, M. Lesiak-Bzdak, J. Lünemann, J. Madsen, R. Maruyama, K. Mase, H. S. Matis, F. McNally, K. Meagher, M. Merck, P. Mészáros, T. Meures, S. Miarecki, E. Middell, N. Milke, J. Miller, L. Mohrmann, T. Montaruli, R. Morse, R. Nahnhauer, U. Naumann, S. C. Nowicki, D. R. Nygren, A. Obertacke, S. Odrowski, A. Olivas, M. Olivo, A. O'Murchadha, S. Panknin, L. Paul, J. A. Pepper, C. Pérez De Los Heros, D. Pieloth, N. Pirk, J. Posselt, P. B. Price, G. T. Przybylski, L. Rädel, K. Rawlins, P. Redl, E. Resconi, W. Rhode, M. Ribordy, M. Richman, B. Riedel, J. P. Rodrigues, F. Rothmaier, C. Rott, T. Ruhe, B. Ruzybayev, D. Ryckbosch, S. M. Saba, T. Salameh, H. G. Sander, M. Santander, S. Sarkar, K. Schatto, M. Scheel, F. Scheriau, T. Schmidt, M. Schmitz, S. Schoenen, S. Schöneberg, L. Schönherr, A. Schönwald, A. Schukraft, L. Schulte, O. Schulz, D. Seckel, S. H. Seo, Y. Sestayo, S. Seunarine, C. Sheremata, M. W.E. Smith, M. Soiron, D. Soldin, G. M. Spiczak, C. Spiering, M. Stamatikos, T. Stanev, A. Stasik, T. Stezelberger, R. G. Stokstad, A. Stössl, E. A. Strahler, R. Ström, G. W. Sullivan, H. Taavola, I. Taboada, A. Tamburro, S. Ter-Antonyan, S. Tilav, P. A. Toale, S. Toscano, M. Usner, D. Van Der Drift, N. Van Eijndhoven, A. Van Overloop, J. Van Santen, M. Vehring, M. Voge, M. Vraeghe, C. Walck, T. Waldenmaier, M. Wallraff, M. Walter, R. Wasserman, Ch Weaver, C. Wendt, S. Westerhoff, N. Whitehorn, K. Wiebe, C. H. Wiebusch, D. R. Williams, H. Wissing, M. Wolf, T. R. Wood, K. Woschnagg, C. Xu, D. L. Xu, X. W. Xu, J. P. Yanez, G. Yodh, S. Yoshida, P. Zarzhitsky, J. Ziemann, S. Zierke, A. Zilles, M. Zoll

    Research output: Contribution to journalArticle

    Abstract

    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.

    Original languageEnglish (US)
    Article number55
    JournalAstrophysical Journal
    Volume765
    Issue number1
    DOIs
    StatePublished - Mar 1 2013

    Fingerprint

    cosmic ray showers
    cosmic ray
    cosmic rays
    anisotropy
    air
    energy bands
    energy
    detectors
    arrivals
    poles
    neutrinos

    Keywords

    • astroparticle physics
    • cosmic rays

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Aartsen, M. G., Abbasi, R., Abdou, Y., Ackermann, M., Adams, J., Aguilar, J. A., ... Zoll, M. (2013). Observation of cosmic-ray anisotropy with the icetop air shower array. Astrophysical Journal, 765(1), [55]. https://doi.org/10.1088/0004-637X/765/1/55

    Observation of cosmic-ray anisotropy with the icetop air shower array. / Aartsen, M. G.; Abbasi, R.; Abdou, Y.; 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.; Beattie, K.; Beatty, J. J.; Bechet, S.; Tjus, J. Becker; Becker, K. H.; Bell, M.; Lotfi Benabderrhmane, Mohamed; 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.; Bohaichuk, S.; Bohm, C.; Bose, D.; Böser, S.; Botner, O.; Brayeur, L.; Brown, A. M.; Bruijn, R.; Brunner, J.; Carson, M.; Casey, J.; Casier, M.; Chirkin, D.; Christy, B.; Clark, K.; Clevermann, F.; Cohen, S.; Cowen, D. F.; Silva, A. H.Cruz; Danninger, M.; Daughhetee, J.; Davis, J. C.; De Clercq, C.; De Ridder, S.; Descamps, F.; Desiati, P.; De Vries-Uiterweerd, G.; Deyoung, T.; Díaz-Vélez, J. C.; Dreyer, J.; Dumm, J. P.; Dunkman, M.; Eagan, R.; Eisch, J.; Ellsworth, R. W.; Engdegård, O.; Euler, S.; Evenson, P. A.; Fadiran, O.; Fazely, A. R.; 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. K.; Gallagher, J.; Gerhardt, L.; Gladstone, L.; Glüsenkamp, T.; Goldschmidt, A.; Golup, G.; Goodman, J. A.; Góra, D.; Grant, D.; Gross, A.; Grullon, S.; Gurtner, M.; Ha, C.; Ismail, A. Haj; Hallgren, A.; Halzen, F.; Hanson, K.; Heereman, D.; Heimann, P.; Heinen, D.; Helbing, K.; Hellauer, R.; Hickford, S.; Hill, G. C.; Hoffman, K. D.; Hoffmann, R.; Homeier, A.; Hoshina, K.; Huelsnitz, W.; Hulth, P. O.; Hultqvist, K.; Hussain, S.; Ishihara, A.; Jacobi, E.; Jacobsen, J.; Japaridze, G. S.; Jlelati, O.; Kappes, A.; Karg, T.; Karle, A.; Kiryluk, J.; Kislat, F.; Kläs, J.; Klein, S. R.; Köhne, J. H.; Kohnen, G.; Kolanoski, H.; Köpke, L.; Kopper, C.; Kopper, S.; Koskinen, D. J.; Kowalski, M.; Krasberg, M.; Kroll, G.; Kunnen, J.; Kurahashi, N.; Kuwabara, T.; Labare, M.; Landsman, H.; Larson, M. J.; Lauer, R.; Lesiak-Bzdak, M.; Lünemann, J.; Madsen, J.; Maruyama, R.; Mase, K.; Matis, H. S.; McNally, F.; Meagher, K.; Merck, M.; Mészáros, P.; Meures, T.; Miarecki, S.; Middell, E.; Milke, N.; Miller, J.; Mohrmann, L.; Montaruli, T.; Morse, R.; Nahnhauer, R.; Naumann, U.; Nowicki, S. C.; Nygren, D. R.; Obertacke, A.; Odrowski, S.; Olivas, A.; Olivo, M.; O'Murchadha, A.; Panknin, S.; Paul, L.; Pepper, J. A.; Pérez De Los Heros, C.; Pieloth, D.; Pirk, N.; Posselt, J.; Price, P. B.; Przybylski, G. T.; Rädel, L.; Rawlins, K.; Redl, P.; Resconi, E.; Rhode, W.; Ribordy, M.; Richman, M.; Riedel, B.; Rodrigues, J. P.; Rothmaier, F.; Rott, C.; Ruhe, T.; Ruzybayev, B.; Ryckbosch, D.; Saba, S. M.; Salameh, T.; Sander, H. G.; Santander, M.; Sarkar, S.; Schatto, K.; Scheel, M.; Scheriau, F.; Schmidt, T.; Schmitz, M.; Schoenen, S.; Schöneberg, S.; Schönherr, L.; Schönwald, A.; Schukraft, A.; Schulte, L.; Schulz, O.; Seckel, D.; Seo, S. H.; Sestayo, Y.; Seunarine, S.; Sheremata, C.; Smith, M. W.E.; Soiron, M.; Soldin, D.; Spiczak, G. M.; Spiering, C.; Stamatikos, M.; Stanev, T.; Stasik, A.; Stezelberger, T.; Stokstad, R. G.; Stössl, A.; Strahler, E. A.; Ström, R.; Sullivan, G. W.; Taavola, H.; Taboada, I.; Tamburro, A.; Ter-Antonyan, S.; Tilav, S.; Toale, P. A.; Toscano, S.; Usner, M.; Van Der Drift, D.; Van Eijndhoven, N.; Van Overloop, A.; Van Santen, J.; Vehring, M.; Voge, M.; Vraeghe, M.; Walck, C.; Waldenmaier, T.; Wallraff, M.; Walter, M.; Wasserman, R.; Weaver, Ch; Wendt, C.; Westerhoff, S.; Whitehorn, N.; Wiebe, K.; Wiebusch, C. H.; Williams, D. R.; Wissing, H.; Wolf, M.; Wood, T. R.; Woschnagg, K.; Xu, C.; Xu, D. L.; Xu, X. W.; Yanez, J. P.; Yodh, G.; Yoshida, S.; Zarzhitsky, P.; Ziemann, J.; Zierke, S.; Zilles, A.; Zoll, M.

    In: Astrophysical Journal, Vol. 765, No. 1, 55, 01.03.2013.

    Research output: Contribution to journalArticle

    Aartsen, MG, Abbasi, R, Abdou, Y, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Altmann, D, Andeen, K, Auffenberg, J, Bai, X, Baker, M, Barwick, SW, Baum, V, Bay, R, Beattie, K, Beatty, JJ, Bechet, S, Tjus, JB, Becker, KH, Bell, M, Lotfi Benabderrhmane, M, Benzvi, S, Berdermann, J, Berghaus, P, Berley, D, Bernardini, E, Bertrand, D, Besson, DZ, Bindig, D, Bissok, M, Blaufuss, E, Blumenthal, J, Boersma, DJ, Bohaichuk, S, Bohm, C, Bose, D, Böser, S, Botner, O, Brayeur, L, Brown, AM, Bruijn, R, Brunner, J, Carson, M, Casey, J, Casier, M, Chirkin, D, Christy, B, Clark, K, Clevermann, F, Cohen, S, Cowen, DF, Silva, AHC, Danninger, M, Daughhetee, J, Davis, JC, De Clercq, C, De Ridder, S, Descamps, F, Desiati, P, De Vries-Uiterweerd, G, Deyoung, T, Díaz-Vélez, JC, Dreyer, J, Dumm, JP, Dunkman, M, Eagan, R, Eisch, J, Ellsworth, RW, Engdegård, O, Euler, S, Evenson, PA, Fadiran, O, Fazely, AR, Fedynitch, A, Feintzeig, J, Feusels, T, Filimonov, K, Finley, C, Fischer-Wasels, T, Flis, S, Franckowiak, A, Franke, R, Frantzen, K, Fuchs, T, Gaisser, TK, Gallagher, J, Gerhardt, L, Gladstone, L, Glüsenkamp, T, Goldschmidt, A, Golup, G, Goodman, JA, Góra, D, Grant, D, Gross, A, Grullon, S, Gurtner, M, Ha, C, Ismail, AH, Hallgren, A, Halzen, F, Hanson, K, Heereman, D, Heimann, P, Heinen, D, Helbing, K, Hellauer, R, Hickford, S, Hill, GC, Hoffman, KD, Hoffmann, R, Homeier, A, Hoshina, K, Huelsnitz, W, Hulth, PO, Hultqvist, K, Hussain, S, Ishihara, A, Jacobi, E, Jacobsen, J, Japaridze, GS, Jlelati, O, Kappes, A, Karg, T, Karle, A, Kiryluk, J, Kislat, F, Kläs, J, Klein, SR, Köhne, JH, Kohnen, G, Kolanoski, H, Köpke, L, Kopper, C, Kopper, S, Koskinen, DJ, Kowalski, M, Krasberg, M, Kroll, G, Kunnen, J, Kurahashi, N, Kuwabara, T, Labare, M, Landsman, H, Larson, MJ, Lauer, R, Lesiak-Bzdak, M, Lünemann, J, Madsen, J, Maruyama, R, Mase, K, Matis, HS, McNally, F, Meagher, K, Merck, M, Mészáros, P, Meures, T, Miarecki, S, Middell, E, Milke, N, Miller, J, Mohrmann, L, Montaruli, T, Morse, R, Nahnhauer, R, Naumann, U, Nowicki, SC, Nygren, DR, Obertacke, A, Odrowski, S, Olivas, A, Olivo, M, O'Murchadha, A, Panknin, S, Paul, L, Pepper, JA, Pérez De Los Heros, C, Pieloth, D, Pirk, N, Posselt, J, Price, PB, Przybylski, GT, Rädel, L, Rawlins, K, Redl, P, Resconi, E, Rhode, W, Ribordy, M, Richman, M, Riedel, B, Rodrigues, JP, Rothmaier, F, Rott, C, Ruhe, T, Ruzybayev, B, Ryckbosch, D, Saba, SM, Salameh, T, Sander, HG, Santander, M, Sarkar, S, Schatto, K, Scheel, M, Scheriau, F, Schmidt, T, Schmitz, M, Schoenen, S, Schöneberg, S, Schönherr, L, Schönwald, A, Schukraft, A, Schulte, L, Schulz, O, Seckel, D, Seo, SH, Sestayo, Y, Seunarine, S, Sheremata, C, Smith, MWE, Soiron, M, Soldin, D, Spiczak, GM, Spiering, C, Stamatikos, M, Stanev, T, Stasik, A, Stezelberger, T, Stokstad, RG, Stössl, A, Strahler, EA, Ström, R, Sullivan, GW, Taavola, H, Taboada, I, Tamburro, A, Ter-Antonyan, S, Tilav, S, Toale, PA, Toscano, S, Usner, M, Van Der Drift, D, Van Eijndhoven, N, Van Overloop, A, Van Santen, J, Vehring, M, Voge, M, Vraeghe, M, Walck, C, Waldenmaier, T, Wallraff, M, Walter, M, Wasserman, R, Weaver, C, Wendt, C, Westerhoff, S, Whitehorn, N, Wiebe, K, Wiebusch, CH, Williams, DR, Wissing, H, Wolf, M, Wood, TR, Woschnagg, K, Xu, C, Xu, DL, Xu, XW, Yanez, JP, Yodh, G, Yoshida, S, Zarzhitsky, P, Ziemann, J, Zierke, S, Zilles, A & Zoll, M 2013, 'Observation of cosmic-ray anisotropy with the icetop air shower array', Astrophysical Journal, vol. 765, no. 1, 55. https://doi.org/10.1088/0004-637X/765/1/55
    Aartsen MG, Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar JA et al. Observation of cosmic-ray anisotropy with the icetop air shower array. Astrophysical Journal. 2013 Mar 1;765(1). 55. https://doi.org/10.1088/0004-637X/765/1/55
    Aartsen, M. G. ; Abbasi, R. ; Abdou, Y. ; 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. ; Beattie, K. ; Beatty, J. J. ; Bechet, S. ; Tjus, J. Becker ; Becker, K. H. ; Bell, M. ; Lotfi Benabderrhmane, Mohamed ; 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. ; Bohaichuk, S. ; Bohm, C. ; Bose, D. ; Böser, S. ; Botner, O. ; Brayeur, L. ; Brown, A. M. ; Bruijn, R. ; Brunner, J. ; Carson, M. ; Casey, J. ; Casier, M. ; Chirkin, D. ; Christy, B. ; Clark, K. ; Clevermann, F. ; Cohen, S. ; Cowen, D. F. ; Silva, A. H.Cruz ; Danninger, M. ; Daughhetee, J. ; Davis, J. C. ; De Clercq, C. ; De Ridder, S. ; Descamps, F. ; Desiati, P. ; De Vries-Uiterweerd, G. ; Deyoung, T. ; Díaz-Vélez, J. C. ; Dreyer, J. ; Dumm, J. P. ; Dunkman, M. ; Eagan, R. ; Eisch, J. ; Ellsworth, R. W. ; Engdegård, O. ; Euler, S. ; Evenson, P. A. ; Fadiran, O. ; Fazely, A. R. ; 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. K. ; Gallagher, J. ; Gerhardt, L. ; Gladstone, L. ; Glüsenkamp, T. ; Goldschmidt, A. ; Golup, G. ; Goodman, J. A. ; Góra, D. ; Grant, D. ; Gross, A. ; Grullon, S. ; Gurtner, M. ; Ha, C. ; Ismail, A. Haj ; Hallgren, A. ; Halzen, F. ; Hanson, K. ; Heereman, D. ; Heimann, P. ; Heinen, D. ; Helbing, K. ; Hellauer, R. ; Hickford, S. ; Hill, G. C. ; Hoffman, K. D. ; Hoffmann, R. ; Homeier, A. ; Hoshina, K. ; Huelsnitz, W. ; Hulth, P. O. ; Hultqvist, K. ; Hussain, S. ; Ishihara, A. ; Jacobi, E. ; Jacobsen, J. ; Japaridze, G. S. ; Jlelati, O. ; Kappes, A. ; Karg, T. ; Karle, A. ; Kiryluk, J. ; Kislat, F. ; Kläs, J. ; Klein, S. R. ; Köhne, J. H. ; Kohnen, G. ; Kolanoski, H. ; Köpke, L. ; Kopper, C. ; Kopper, S. ; Koskinen, D. J. ; Kowalski, M. ; Krasberg, M. ; Kroll, G. ; Kunnen, J. ; Kurahashi, N. ; Kuwabara, T. ; Labare, M. ; Landsman, H. ; Larson, M. J. ; Lauer, R. ; Lesiak-Bzdak, M. ; Lünemann, J. ; Madsen, J. ; Maruyama, R. ; Mase, K. ; Matis, H. S. ; McNally, F. ; Meagher, K. ; Merck, M. ; Mészáros, P. ; Meures, T. ; Miarecki, S. ; Middell, E. ; Milke, N. ; Miller, J. ; Mohrmann, L. ; Montaruli, T. ; Morse, R. ; Nahnhauer, R. ; Naumann, U. ; Nowicki, S. C. ; Nygren, D. R. ; Obertacke, A. ; Odrowski, S. ; Olivas, A. ; Olivo, M. ; O'Murchadha, A. ; Panknin, S. ; Paul, L. ; Pepper, J. A. ; Pérez De Los Heros, C. ; Pieloth, D. ; Pirk, N. ; Posselt, J. ; Price, P. B. ; Przybylski, G. T. ; Rädel, L. ; Rawlins, K. ; Redl, P. ; Resconi, E. ; Rhode, W. ; Ribordy, M. ; Richman, M. ; Riedel, B. ; Rodrigues, J. P. ; Rothmaier, F. ; Rott, C. ; Ruhe, T. ; Ruzybayev, B. ; Ryckbosch, D. ; Saba, S. M. ; Salameh, T. ; Sander, H. G. ; Santander, M. ; Sarkar, S. ; Schatto, K. ; Scheel, M. ; Scheriau, F. ; Schmidt, T. ; Schmitz, M. ; Schoenen, S. ; Schöneberg, S. ; Schönherr, L. ; Schönwald, A. ; Schukraft, A. ; Schulte, L. ; Schulz, O. ; Seckel, D. ; Seo, S. H. ; Sestayo, Y. ; Seunarine, S. ; Sheremata, C. ; Smith, M. W.E. ; Soiron, M. ; Soldin, D. ; Spiczak, G. M. ; Spiering, C. ; Stamatikos, M. ; Stanev, T. ; Stasik, A. ; Stezelberger, T. ; Stokstad, R. G. ; Stössl, A. ; Strahler, E. A. ; Ström, R. ; Sullivan, G. W. ; Taavola, H. ; Taboada, I. ; Tamburro, A. ; Ter-Antonyan, S. ; Tilav, S. ; Toale, P. A. ; Toscano, S. ; Usner, M. ; Van Der Drift, D. ; Van Eijndhoven, N. ; Van Overloop, A. ; Van Santen, J. ; Vehring, M. ; Voge, M. ; Vraeghe, M. ; Walck, C. ; Waldenmaier, T. ; Wallraff, M. ; Walter, M. ; Wasserman, R. ; Weaver, Ch ; Wendt, C. ; Westerhoff, S. ; Whitehorn, N. ; Wiebe, K. ; Wiebusch, C. H. ; Williams, D. R. ; Wissing, H. ; Wolf, M. ; Wood, T. R. ; Woschnagg, K. ; Xu, C. ; Xu, D. L. ; Xu, X. W. ; Yanez, J. P. ; Yodh, G. ; Yoshida, S. ; Zarzhitsky, P. ; Ziemann, J. ; Zierke, S. ; Zilles, A. ; Zoll, M. / Observation of cosmic-ray anisotropy with the icetop air shower array. In: Astrophysical Journal. 2013 ; Vol. 765, No. 1.
    @article{b5161b1e2bf74f218cea07480ad7f4c4,
    title = "Observation of cosmic-ray anisotropy with the icetop air shower array",
    abstract = "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.",
    keywords = "astroparticle physics, cosmic rays",
    author = "Aartsen, {M. G.} and R. Abbasi and Y. Abdou and M. Ackermann and J. Adams and Aguilar, {J. A.} and M. Ahlers and D. Altmann and K. Andeen and J. Auffenberg and X. Bai and M. Baker and Barwick, {S. W.} and V. Baum and R. Bay and K. Beattie and Beatty, {J. J.} and S. Bechet and Tjus, {J. Becker} and Becker, {K. H.} and M. Bell and {Lotfi Benabderrhmane}, Mohamed and S. Benzvi and J. Berdermann and P. Berghaus and D. Berley and E. Bernardini and D. Bertrand and Besson, {D. Z.} and D. Bindig and M. Bissok and E. Blaufuss and J. Blumenthal and Boersma, {D. J.} and S. Bohaichuk and C. Bohm and D. Bose and S. B{\"o}ser and O. Botner and L. Brayeur and Brown, {A. M.} and R. Bruijn and J. Brunner and M. Carson and J. Casey and M. Casier and D. Chirkin and B. Christy and K. Clark and F. Clevermann and S. Cohen and Cowen, {D. F.} and Silva, {A. H.Cruz} and M. Danninger and J. Daughhetee and Davis, {J. C.} and {De Clercq}, C. and {De Ridder}, S. and F. Descamps and P. Desiati and {De Vries-Uiterweerd}, G. and T. Deyoung and D{\'i}az-V{\'e}lez, {J. C.} and J. Dreyer and Dumm, {J. P.} and M. Dunkman and R. Eagan and J. Eisch and Ellsworth, {R. W.} and O. Engdeg{\aa}rd and S. Euler and Evenson, {P. A.} and O. Fadiran and Fazely, {A. R.} and A. Fedynitch and J. Feintzeig and T. Feusels and K. Filimonov and C. Finley and T. Fischer-Wasels and S. Flis and A. Franckowiak and R. Franke and K. Frantzen and T. Fuchs and Gaisser, {T. K.} and J. Gallagher and L. Gerhardt and L. Gladstone and T. Gl{\"u}senkamp and A. Goldschmidt and G. Golup and Goodman, {J. A.} and D. G{\'o}ra and D. Grant and A. Gross and S. Grullon and M. Gurtner and C. Ha and Ismail, {A. Haj} and A. Hallgren and F. Halzen and K. Hanson and D. Heereman and P. Heimann and D. Heinen and K. Helbing and R. Hellauer and S. Hickford and Hill, {G. C.} and Hoffman, {K. D.} and R. Hoffmann and A. Homeier and K. Hoshina and W. Huelsnitz and Hulth, {P. O.} and K. Hultqvist and S. Hussain and A. Ishihara and E. Jacobi and J. Jacobsen and Japaridze, {G. S.} and O. Jlelati and A. Kappes and T. Karg and A. Karle and J. Kiryluk and F. Kislat and J. Kl{\"a}s and Klein, {S. R.} and K{\"o}hne, {J. H.} and G. Kohnen and H. Kolanoski and L. K{\"o}pke and C. Kopper and S. Kopper and Koskinen, {D. J.} and M. Kowalski and M. Krasberg and G. Kroll and J. Kunnen and N. Kurahashi and T. Kuwabara and M. Labare and H. Landsman and Larson, {M. J.} and R. Lauer and M. Lesiak-Bzdak and J. L{\"u}nemann and J. Madsen and R. Maruyama and K. Mase and Matis, {H. S.} and F. McNally and K. Meagher and M. Merck and P. M{\'e}sz{\'a}ros and T. Meures and S. Miarecki and E. Middell and N. Milke and J. Miller and L. Mohrmann and T. Montaruli and R. Morse and R. Nahnhauer and U. Naumann and Nowicki, {S. C.} and Nygren, {D. R.} and A. Obertacke and S. Odrowski and A. Olivas and M. Olivo and A. O'Murchadha and S. Panknin and L. Paul and Pepper, {J. A.} and {P{\'e}rez De Los Heros}, C. and D. Pieloth and N. Pirk and J. Posselt and Price, {P. B.} and Przybylski, {G. T.} and L. R{\"a}del and K. Rawlins and P. Redl and E. Resconi and W. Rhode and M. Ribordy and M. Richman and B. Riedel and Rodrigues, {J. P.} and F. Rothmaier and C. Rott and T. Ruhe and B. Ruzybayev and D. Ryckbosch and Saba, {S. M.} and T. Salameh and Sander, {H. G.} and M. Santander and S. Sarkar and K. Schatto and M. Scheel and F. Scheriau and T. Schmidt and M. Schmitz and S. Schoenen and S. Sch{\"o}neberg and L. Sch{\"o}nherr and A. Sch{\"o}nwald and A. Schukraft and L. Schulte and O. Schulz and D. Seckel and Seo, {S. H.} and Y. Sestayo and S. Seunarine and C. Sheremata and Smith, {M. W.E.} and M. Soiron and D. Soldin and Spiczak, {G. M.} and C. Spiering and M. Stamatikos and T. Stanev and A. Stasik and T. Stezelberger and Stokstad, {R. G.} and A. St{\"o}ssl and Strahler, {E. A.} and R. Str{\"o}m and Sullivan, {G. W.} and H. Taavola and I. Taboada and A. Tamburro and S. Ter-Antonyan and S. Tilav and Toale, {P. A.} and S. Toscano and M. Usner and {Van Der Drift}, D. and {Van Eijndhoven}, N. and {Van Overloop}, A. and {Van Santen}, J. and M. Vehring and M. Voge and M. Vraeghe and C. Walck and T. Waldenmaier and M. Wallraff and M. Walter and R. Wasserman and Ch Weaver and C. Wendt and S. Westerhoff and N. Whitehorn and K. Wiebe and Wiebusch, {C. H.} and Williams, {D. R.} and H. Wissing and M. Wolf and Wood, {T. R.} and K. Woschnagg and C. Xu and Xu, {D. L.} and Xu, {X. W.} and Yanez, {J. P.} and G. Yodh and S. Yoshida and P. Zarzhitsky and J. Ziemann and S. Zierke and A. Zilles and M. Zoll",
    year = "2013",
    month = "3",
    day = "1",
    doi = "10.1088/0004-637X/765/1/55",
    language = "English (US)",
    volume = "765",
    journal = "Astrophysical Journal",
    issn = "0004-637X",
    publisher = "IOP Publishing Ltd.",
    number = "1",

    }

    TY - JOUR

    T1 - Observation of cosmic-ray anisotropy with the icetop air shower array

    AU - Aartsen, M. G.

    AU - Abbasi, R.

    AU - Abdou, Y.

    AU - Ackermann, M.

    AU - Adams, J.

    AU - Aguilar, J. A.

    AU - Ahlers, M.

    AU - Altmann, D.

    AU - Andeen, K.

    AU - Auffenberg, J.

    AU - Bai, X.

    AU - Baker, M.

    AU - Barwick, S. W.

    AU - Baum, V.

    AU - Bay, R.

    AU - Beattie, K.

    AU - Beatty, J. J.

    AU - Bechet, S.

    AU - Tjus, J. Becker

    AU - Becker, K. H.

    AU - Bell, M.

    AU - Lotfi Benabderrhmane, Mohamed

    AU - Benzvi, S.

    AU - Berdermann, J.

    AU - Berghaus, P.

    AU - Berley, D.

    AU - Bernardini, E.

    AU - Bertrand, D.

    AU - Besson, D. Z.

    AU - Bindig, D.

    AU - Bissok, M.

    AU - Blaufuss, E.

    AU - Blumenthal, J.

    AU - Boersma, D. J.

    AU - Bohaichuk, S.

    AU - Bohm, C.

    AU - Bose, D.

    AU - Böser, S.

    AU - Botner, O.

    AU - Brayeur, L.

    AU - Brown, A. M.

    AU - Bruijn, R.

    AU - Brunner, J.

    AU - Carson, M.

    AU - Casey, J.

    AU - Casier, M.

    AU - Chirkin, D.

    AU - Christy, B.

    AU - Clark, K.

    AU - Clevermann, F.

    AU - Cohen, S.

    AU - Cowen, D. F.

    AU - Silva, A. H.Cruz

    AU - Danninger, M.

    AU - Daughhetee, J.

    AU - Davis, J. C.

    AU - De Clercq, C.

    AU - De Ridder, S.

    AU - Descamps, F.

    AU - Desiati, P.

    AU - De Vries-Uiterweerd, G.

    AU - Deyoung, T.

    AU - Díaz-Vélez, J. C.

    AU - Dreyer, J.

    AU - Dumm, J. P.

    AU - Dunkman, M.

    AU - Eagan, R.

    AU - Eisch, J.

    AU - Ellsworth, R. W.

    AU - Engdegård, O.

    AU - Euler, S.

    AU - Evenson, P. A.

    AU - Fadiran, O.

    AU - Fazely, A. R.

    AU - Fedynitch, A.

    AU - Feintzeig, J.

    AU - Feusels, T.

    AU - Filimonov, K.

    AU - Finley, C.

    AU - Fischer-Wasels, T.

    AU - Flis, S.

    AU - Franckowiak, A.

    AU - Franke, R.

    AU - Frantzen, K.

    AU - Fuchs, T.

    AU - Gaisser, T. K.

    AU - Gallagher, J.

    AU - Gerhardt, L.

    AU - Gladstone, L.

    AU - Glüsenkamp, T.

    AU - Goldschmidt, A.

    AU - Golup, G.

    AU - Goodman, J. A.

    AU - Góra, D.

    AU - Grant, D.

    AU - Gross, A.

    AU - Grullon, S.

    AU - Gurtner, M.

    AU - Ha, C.

    AU - Ismail, A. Haj

    AU - Hallgren, A.

    AU - Halzen, F.

    AU - Hanson, K.

    AU - Heereman, D.

    AU - Heimann, P.

    AU - Heinen, D.

    AU - Helbing, K.

    AU - Hellauer, R.

    AU - Hickford, S.

    AU - Hill, G. C.

    AU - Hoffman, K. D.

    AU - Hoffmann, R.

    AU - Homeier, A.

    AU - Hoshina, K.

    AU - Huelsnitz, W.

    AU - Hulth, P. O.

    AU - Hultqvist, K.

    AU - Hussain, S.

    AU - Ishihara, A.

    AU - Jacobi, E.

    AU - Jacobsen, J.

    AU - Japaridze, G. S.

    AU - Jlelati, O.

    AU - Kappes, A.

    AU - Karg, T.

    AU - Karle, A.

    AU - Kiryluk, J.

    AU - Kislat, F.

    AU - Kläs, J.

    AU - Klein, S. R.

    AU - Köhne, J. H.

    AU - Kohnen, G.

    AU - Kolanoski, H.

    AU - Köpke, L.

    AU - Kopper, C.

    AU - Kopper, S.

    AU - Koskinen, D. J.

    AU - Kowalski, M.

    AU - Krasberg, M.

    AU - Kroll, G.

    AU - Kunnen, J.

    AU - Kurahashi, N.

    AU - Kuwabara, T.

    AU - Labare, M.

    AU - Landsman, H.

    AU - Larson, M. J.

    AU - Lauer, R.

    AU - Lesiak-Bzdak, M.

    AU - Lünemann, J.

    AU - Madsen, J.

    AU - Maruyama, R.

    AU - Mase, K.

    AU - Matis, H. S.

    AU - McNally, F.

    AU - Meagher, K.

    AU - Merck, M.

    AU - Mészáros, P.

    AU - Meures, T.

    AU - Miarecki, S.

    AU - Middell, E.

    AU - Milke, N.

    AU - Miller, J.

    AU - Mohrmann, L.

    AU - Montaruli, T.

    AU - Morse, R.

    AU - Nahnhauer, R.

    AU - Naumann, U.

    AU - Nowicki, S. C.

    AU - Nygren, D. R.

    AU - Obertacke, A.

    AU - Odrowski, S.

    AU - Olivas, A.

    AU - Olivo, M.

    AU - O'Murchadha, A.

    AU - Panknin, S.

    AU - Paul, L.

    AU - Pepper, J. A.

    AU - Pérez De Los Heros, C.

    AU - Pieloth, D.

    AU - Pirk, N.

    AU - Posselt, J.

    AU - Price, P. B.

    AU - Przybylski, G. T.

    AU - Rädel, L.

    AU - Rawlins, K.

    AU - Redl, P.

    AU - Resconi, E.

    AU - Rhode, W.

    AU - Ribordy, M.

    AU - Richman, M.

    AU - Riedel, B.

    AU - Rodrigues, J. P.

    AU - Rothmaier, F.

    AU - Rott, C.

    AU - Ruhe, T.

    AU - Ruzybayev, B.

    AU - Ryckbosch, D.

    AU - Saba, S. M.

    AU - Salameh, T.

    AU - Sander, H. G.

    AU - Santander, M.

    AU - Sarkar, S.

    AU - Schatto, K.

    AU - Scheel, M.

    AU - Scheriau, F.

    AU - Schmidt, T.

    AU - Schmitz, M.

    AU - Schoenen, S.

    AU - Schöneberg, S.

    AU - Schönherr, L.

    AU - Schönwald, A.

    AU - Schukraft, A.

    AU - Schulte, L.

    AU - Schulz, O.

    AU - Seckel, D.

    AU - Seo, S. H.

    AU - Sestayo, Y.

    AU - Seunarine, S.

    AU - Sheremata, C.

    AU - Smith, M. W.E.

    AU - Soiron, M.

    AU - Soldin, D.

    AU - Spiczak, G. M.

    AU - Spiering, C.

    AU - Stamatikos, M.

    AU - Stanev, T.

    AU - Stasik, A.

    AU - Stezelberger, T.

    AU - Stokstad, R. G.

    AU - Stössl, A.

    AU - Strahler, E. A.

    AU - Ström, R.

    AU - Sullivan, G. W.

    AU - Taavola, H.

    AU - Taboada, I.

    AU - Tamburro, A.

    AU - Ter-Antonyan, S.

    AU - Tilav, S.

    AU - Toale, P. A.

    AU - Toscano, S.

    AU - Usner, M.

    AU - Van Der Drift, D.

    AU - Van Eijndhoven, N.

    AU - Van Overloop, A.

    AU - Van Santen, J.

    AU - Vehring, M.

    AU - Voge, M.

    AU - Vraeghe, M.

    AU - Walck, C.

    AU - Waldenmaier, T.

    AU - Wallraff, M.

    AU - Walter, M.

    AU - Wasserman, R.

    AU - Weaver, Ch

    AU - Wendt, C.

    AU - Westerhoff, S.

    AU - Whitehorn, N.

    AU - Wiebe, K.

    AU - Wiebusch, C. H.

    AU - Williams, D. R.

    AU - Wissing, H.

    AU - Wolf, M.

    AU - Wood, T. R.

    AU - Woschnagg, K.

    AU - Xu, C.

    AU - Xu, D. L.

    AU - Xu, X. W.

    AU - Yanez, J. P.

    AU - Yodh, G.

    AU - Yoshida, S.

    AU - Zarzhitsky, P.

    AU - Ziemann, J.

    AU - Zierke, S.

    AU - Zilles, A.

    AU - Zoll, M.

    PY - 2013/3/1

    Y1 - 2013/3/1

    N2 - 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.

    AB - 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.

    KW - astroparticle physics

    KW - cosmic rays

    UR - http://www.scopus.com/inward/record.url?scp=84874121785&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84874121785&partnerID=8YFLogxK

    U2 - 10.1088/0004-637X/765/1/55

    DO - 10.1088/0004-637X/765/1/55

    M3 - Article

    VL - 765

    JO - Astrophysical Journal

    JF - Astrophysical Journal

    SN - 0004-637X

    IS - 1

    M1 - 55

    ER -