Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory

被引：51

作者：

Abraham, J. ^{[1
]}

Aglietta, M.

Aguirre, C.

Allard, D.

Allekotte, I.

Allison, P.

Alvarez, C.

Alvarez-Muniz, J.

Ambrosio, M.

Anchordoqui, L.

Anjos, J. C.

Aramo, C.

Arisaka, K.

Armengaud, E.

Arneodo, F.

Arqueros, F.

Asch, T.

Asorey, H.

Atulugama, B. S.

Aublin, J.

Ave, M.

Avila, G.

Bacelar, J.

Baecker, T.

Badagnani, D.

Barbosa, A. F.

Barbosa, H. M. J.

Barkhausen, M.

Barnhill, D.

Barroso, S. L. C.

Bauleo, P.

Beatty, J.

Beau, T.

Becker, B. R.

Becker, K. H.

Bellido, J. A.

BenZvi, S.

Berat, C.

Bergmann, T.

Bernardini, P.

Bertou, X.

Biermann, P. L.

Billoir, P.

Blanch-Bigas, O.

Blanco, F.

Blasi, P.

Bleve, C.

Bluemer, H.

Boghrat, P.

Bohacova, M.

机构：

[1] Consejo Nacl Invest Cient & Tecn, Ctr Atom Bariloche, CNEA, Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[2] Consejo Nacl Invest Cient & Tecn, Inst Astron & Fis Espacio, RA-1428 Buenos Aires, DF, Argentina

[3] Univ Tec Nac, CONICET, CNEA, Lab Tandar, RA-1650 Buenos Aires, DF, Argentina

[4] Pierre Auger So Observ, RA-5613 Malargue, Mendoza, Argentina

[5] Univ Nacl Buenos Aires, CONICET, Fac Ciencias Exactas, Dept Fis,IFLP, RA-1900 La Plata, Argentina

[6] Univ Nacl La Plata, Fac Ciencias Exactas, Dept Fis, RA-1900 La Plata, Argentina

[7] Univ Tecnol Nacl Reg Mendoza & San Rafael, CONICET, CEILAP, CITEFA, Mendoza, Argentina

[8] Univ Adelaide, Dept Phys, Adelaide, SA 5005, Australia

[9] Univ Catolica Bolivia, La Paz, Bolivia

[10] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

[11] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[12] Univ Sao Paulo, Inst Astron & Geofis, BR-05508900 Sao Paulo, Brazil

[13] Univ Estadual Campinas, Gleb Wataghin Phys Inst, Dept Raios Cosm & Cronol, BR-13083970 Campinas, SP, Brazil

[14] Univ Estadual Feira de Santana, Dept Fis, BR-44031460 Feira De Santana, Brazil

[15] Univ Estadual Sudoeste Bahia, Dept Ciencias Exatas, BR-48083900 Vitoria Da Conquista, BA, Brazil

[16] Univ Fed Bahia, BR-40210340 Salvador, BA, Brazil

[17] Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil

[18] Univ Fed Fluminense, Inst Fis, BR-24210340 Niteroi, RJ, Brazil

[19] Charles Univ Prague, Inst Particle & Nucl Phys, Fac Math & Phys, CZ-18000 Prague 8, Czech Republic

[20] Acad Sci Czech Republ, Inst Phys, CZ-18221 Prague 8, Czech Republic

[21] Univ Paris 11, Inst Nucl Phys, F-91400 Orsay, France

[22] CNRS, IN2P3, F-91400 Orsay, France

[23] Univ Paris 07, Lab AstroParticule & Cosmol, F-75231 Paris 05, France

[24] Univ Paris 11, Lab Accelerateur Lineaire, F-91898 Orsay, France

[25] CNRS, IN2P3, F-91898 Orsay, France

[26] Univ Paris 06, Lab Phys Nucl & Hautes Energies, F-75252 Paris 05, France

[27] CNRS, IN2P3, F-75252 Paris 05, France

[28] Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, F-38026 St Martin Dheres, France

[29] Berg Univ Wuppertal, Fachbereich C Phys, D-42097 Wuppertal, Germany

[30] Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany

[31] Forschungszentrum Karlsruhe, Inst Prozessdatenverarbeitung & Elektron, D-76021 Karlsruhe, Germany

[32] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[33] RWTH Aachen 3, Phys Inst A, Physikzentrum, D-52056 Aachen, Germany

[34] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[35] Univ Siegen, Fachbereich Phys Expt Teilchenphys 7, D-57068 Siegen, Germany

[36] Natl Tech Univ Athens, Sch Appl Sci, Dept Phys, GR-15780 Zografos, Greece

[37] Univ Athens, Dept Phys, Nucl & Particle Phys Sect, GR-15771 Athens, Greece

[38] Univ Aquila, Dipartimento Fis, I-67010 Coppito, Italy

[39] Ist Nazl Fis Nucl, Dipartimento Fis, I-67010 Coppito, Italy

[40] Univ Lecce, Dipartimento Fis, I-73100 Lecce, Italy

[41] Sezione Ist Nazl Fis Nucl, I-73100 Lecce, Italy

[42] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[43] Sezione Ist Nazl Fis Nucl, I-20133 Milan, Italy

[44] Univ Naples Federico II, Dipartimento Fis, I-80123 Naples, Italy

[45] Sezione Ist Nazl Fis Nucl, I-80123 Naples, Italy

[46] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

[47] Sezione Ist Nazl Fis Nucl, I-00133 Rome, Italy

[48] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy

[49] Sezione Ist Nazl Fis Nucl, I-10125 Turin, Italy

[50] Univ Turin, Ist Fis Spazio Interplanetario, Sez Torino, I-10125 Turin, Italy

来源：

ASTROPARTICLE PHYSICS | 2007年 / 27卷 / 04期

基金：

英国科学技术设施理事会; 美国国家科学基金会;

关键词：

cosmic tays; anisotropies; galactic centre;

D O I：

10.1016/j.astropartphys.2006.11.002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Data from the Pierre Auger Observatory are analyzed to search for anisotropies near the direction of the Galactic Centre at EeV energies. The exposure of the surface array in this part of the sky is already significantly larger than that of the fore-runner experiments. Our results do not support previous findings of localized excesses in the AGASA and SUGAR data. We set an upper bound on a point-like flux of cosmic rays arriving from the Galactic Centre which excludes several scenarios predicting sources of EeV neutrons from Sagittarius A. Also the events detected simultaneously by the surface and fluorescence detectors (the 'hybrid' data set), which have better pointing accuracy but are less numerous than those of the surface array alone, do not show any significant localized excess from this direction. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：244 / 253

页数：10

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