Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory

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doi:10.1016/j.physletb.2010.02.013

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Multitudinario:474 "Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory" (2010) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 685(4-5):239-246

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Abstract:

We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 10 18 eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law E - γ with index γ = 3.3 below the ankle which is measured at log 10 (E ankle / eV) = 18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log 10 (E / eV) = 19.5, detected with high statistical significance. © 2010 Elsevier B.V. All rights reserved.

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Documento:	Artículo
Título:	Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory
Autor:	Multitudinario:474
Filiación:	Observatorio Pierre Auger, Av. San Martin Norte 304, 5613 Malargüe, Argentina Centro Atómico Bariloche, Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina Centro Atomico Constituyentes (Comision Nacional de Energia Atomica/CONICET/UTN-FRBA), Buenos Aires, Argentina Centro de Investigaciones en Láseres y Aplicaciones, CITEFA, CONICET, Argentina Departamento de Física, FCEyN, Universidad de Buenos Aires, Argentina IFLP, Universidad Nacional de La Plata, CONICET, La Plata, Argentina Instituto de Astronomía y Física del Espacio (CONICET), Buenos Aires, Argentina National Technological University, Faculty Mendoza (CONICET/CNEA), Mendoza, Argentina Pierre Auger Southern Observatory, Malargüe, Argentina Pierre Auger Southern Observatory and Comisión Nacional de Energía Atómica, Malargüe, Argentina University of Adelaide, Adelaide, SA, Australia Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, RJ, Brazil Pontifícia Universidade Católica, Rio de Janeiro, RJ, Brazil Universidade de São Paulo, Instituto de Física, São Carlos, SP, Brazil Universidade de São Paulo, Instituto de Física, São Paulo, SP, Brazil Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil Universidade Estadual de Feira de Santana, Brazil Universidade Estadual do Sudoeste da Bahia, Vitoria da Conquista, BA, Brazil Universidade Federal da Bahia, Salvador, BA, Brazil Universidade Federal, ABC, Santo André, SP, Brazil Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil Rudjer Bošković Institute, 10000 Zagreb, Croatia Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic Institute of Physics, the Academy of Sciences of the Czech Republic, Prague, Czech Republic Palacký University, Olomouc, Czech Republic Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris 11, CNRS-IN2P3, Orsay, France Laboratoire AstroParticule et Cosmologie (APC), Université Paris 7, CNRS-IN2P3, Paris, France Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris 11, CNRS-IN2P3, Orsay, France Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, Paris, France Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier, INPG, Grenoble, France SUBATECH, CNRS-IN2P3, Nantes, France Bergische Universität Wuppertal, Wuppertal, Germany Karlsruhe Institute of Technology, Institut für Kernphysik, Campus North, Karlsruhe, Germany Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Campus North, Karlsruhe, Germany Karlsruhe Institute of Technology, Institut für Experimentelle Kernphysik (IEKP), Campus South, Karlsruhe, Germany Max-Planck-Institut für Radioastronomie, Bonn, Germany RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany Universität Hamburg, Hamburg, Germany Universität Siegen, Siegen, Germany Dipartimento di Fisica dell'Università, INFN, Genova, Italy Università dell'Aquila, INFN, L'Aquila, Italy Università di Milano, Sezione INFN, Milan, Italy Dipartimento di Fisica dell'Università del Salento, Sezione INFN, Lecce, Italy Università di Napoli Federico II, Sezione INFN, Napoli, Italy Università di Roma II Tor Vergata, Sezione INFN, Roma, Italy Università di Catania, Sezione INFN, Catania, Italy Università di Torino, Sezione INFN, Torino, Italy Dipartimento di Ingegneria dell'Innovazione dell'Università del Salento, Sezione INFN, Lecce, Italy Gran Sasso Center for Astroparticle Physics, Italy Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy Istituto di Fisica dello Spazio Interplanetario (INAF), Università di Torino, Sezione INFN, Torino, Italy INFN, Laboratori Nazionali del Gran Sasso, Assergi, L'Aquila, Italy Università di Palermo, Sezione INFN, Catania, Italy Benemérita Universidad Autónoma de Puebla, Puebla, Mexico Centro de Investigación y de Estudios Avanzados, IPN (CINVESTAV), México, D.F., Mexico Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan, Mexico Universidad Nacional Autonoma de Mexico, Mexico, D.F., Mexico IMAPP, Radboud University, Nijmegen, Netherlands Kernfysisch Versneller Instituut, University of Groningen, Groningen, Netherlands NIKHEF, Amsterdam, Netherlands ASTRON, Dwingeloo, Netherlands Institute of Nuclear Physics PAN, Krakow, Poland University of Łódź, Łódź, Poland LIP, Instituto Superior Técnico, Lisboa, Portugal J. Stefan Institute, Ljubljana, Slovenia Laboratory for Astroparticle Physics, University of Nova Gorica, Slovenia Instituto de Física Corpuscular, CSIC-Universitat de València, Valencia, Spain Universidad Complutense de Madrid, Madrid, Spain Universidad de Alcalá, Alcalá de Henares, Madrid, Spain Universidad de Granada, C.A.F.P.E., Granada, Spain Universidad de Santiago de Compostela, Spain Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, United Kingdom School of Physics and Astronomy, University of Leeds, United Kingdom Argonne National Laboratory, Argonne, IL, United States Case Western Reserve University, Cleveland, OH, United States Colorado School of Mines, Golden, CO, United States Colorado State University, Fort Collins, CO, United States Colorado State University, Pueblo, CO, United States Fermilab, Batavia, IL, United States Louisiana State University, Baton Rouge, LA, United States Michigan Technological University, Houghton, MI, United States New York University, New York, NY, United States Northeastern University, Boston, MA, United States Ohio State University, Columbus, OH, United States Pennsylvania State University, University Park, PA, United States Southern University, Baton Rouge, LA, United States University of California, Los Angeles, CA, United States University of Chicago, Enrico Fermi Institute, Chicago, IL, United States University of Hawaii, Honolulu, HI, United States University of Nebraska, Lincoln, NE, United States University of New Mexico, Albuquerque, NM, United States University of Wisconsin, Madison, WI, United States University of Wisconsin, Milwaukee, WI, United States Institute for Nuclear Science and Technology (INST), Hanoi, Viet Nam
Palabras clave:	Cosmic rays; Energy spectrum; Pierre Auger Observatory
Año:	2010
Volumen:	685
Número:	4-5
Página de inicio:	239
Página de fin:	246
DOI:	http://dx.doi.org/10.1016/j.physletb.2010.02.013
Título revista:	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:	Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:	03702693
CODEN:	PYLBA
Registro:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v685_n4-5_p239_Multitudinario

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http://www.auger.org/combined_spectrum_icrc09.txt

Citas:

---------- APA ----------

(2010) . Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 685(4-5), 239-246.
http://dx.doi.org/10.1016/j.physletb.2010.02.013

---------- CHICAGO ----------

Multitudinario:474. "Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 685, no. 4-5 (2010) : 239-246.
http://dx.doi.org/10.1016/j.physletb.2010.02.013

---------- MLA ----------

Multitudinario:474. "Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 685, no. 4-5, 2010, pp. 239-246.
http://dx.doi.org/10.1016/j.physletb.2010.02.013

---------- VANCOUVER ----------

Multitudinario:474. Measurement of the energy spectrum of cosmic rays above 10 18 eV using the Pierre Auger Observatory. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2010;685(4-5):239-246.
http://dx.doi.org/10.1016/j.physletb.2010.02.013