Since data-taking began in January 2004, the Pierre Auger Observatory has been recording the count rates of low energy secondary cosmic ray particles for the self-calibration of the ground detectors of its surface detector array. After correcting for atmospheric effects, modulations of galactic cosmic rays due to solar activity and transient events are observed. Temporal variations related with the activity of the heliosphere can be determined with high accuracy due to the high total count rates. In this study, the available data are presented together with an analysis focused on the observation of Forbush decreases, where a strong correlation with neutron monitor data is found. © 2011 IOP Publishing Ltd and SISSA.
Documento: | Artículo |
Título: | The pierre auger observatory scaler mode for the study of solar activity modulation of galactic cosmic rays |
Autor: | Multitudinario:485 |
Filiación: | Centro Atómico Bariloche, Instituto Balseiro (CNEA- UNCuyo-CONICET), San Carlos de Bariloche, Argentina Centro Atómico Constituyentes (Comisión Nacional de Energía Atómica/CONICET/UTNFRBA), Buenos Aires, Argentina Centro de Investigaciones en Láseres y Aplicaciones, CITEFA and CONICET, Argentina Departamento de Física, FCEyN, Universidad de Buenos Aires y CONICET, Argentina Konan University, Kobe, Japan IFLP, Universidad Nacional de La Plata, CONICET, La Plata, Argentina Instituto de Astronomía, Física del Espacio (CONICET- UBA), Buenos Aires, Argentina National Technological University, Faculty Mendoza (CONICET/CNEA), Mendoza, Argentina Pierre Auger Southern Observatory, Malargüe, Argentina Pierre Auger Southern Observatory, Comisión Nacional de Energía Atómica, Malargüe, Argentina University of Adelaide, Adelaide, SA, Australia Caltech, Pasadena, United States Institute for Nuclear Science and Technology (INST), Hanoi, Viet Nam 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 do ABC, Santo André, SP, Brazil Universidade Federal do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil University of Wisconsin, Milwaukee, WI, United States Rudjer Bošković Institute, Zagreb, 10000, 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 University of Wisconsin, Madison, WI, United States 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, CNRS-IN2P3, 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 and 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 University of New Mexico, Albuquerque, NM, United States 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 University of Nebraska, Lincoln, NE, United States University of Chicago, Enrico Fermi Institute, Chicago, IL, United States Università di Palermo, Sezione INFN, Catania, Italy University of California, Los Angeles, CA, United States Benemérita Universidad Autónoma de PueblaPuebla, Mexico Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV), México, DF, Mexico Southern University, Baton Rouge, LA, United States Pennsylvania State University, University Park, PA, United States Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan, Mexico Universidad Nacional Autonoma de Mexico, Mexico, DF, 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 Ohio State University, Columbus, OH, United States 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 The Pierre Auger Observatory, Malargüe, Argentina |
Palabras clave: | Cherenkov detectors; Large detector systems for particle and astroparticle physics; Particle detectors |
Año: | 2011 |
Volumen: | 6 |
Número: | 1 |
DOI: | http://dx.doi.org/10.1088/1748-0221/6/01/P01003 |
Título revista: | Journal of Instrumentation |
Título revista abreviado: | J. Instrum. |
ISSN: | 17480221 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17480221_v6_n1_p_Multitudinario |