The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30-80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy - corrected for geometrical effects - is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal. © 2016 American Physical Society.
Documento: | Artículo |
Título: | Energy estimation of cosmic rays with the Engineering Radio Array of the Pierre Auger Observatory |
Autor: | Multitudinario:449 |
Filiación: | Universität Siegen, Fachbereich 7 Physik - Experimentelle Teilchenphysik, Siegen, Germany Lab. de Instrumentacao e Fis. Experimental de Particulas - LIP and Instituto Superior Tecnico - IST, Universidade de Lisboa - UL, Lisboa, Portugal Osservatorio Astrofisico di Torino (INAF), Università di Torino and Sezione INFN, Torino, Italy Fermilab, Batavia, IL, United States Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris 11, CNRS-IN2P3, Orsay, France Universidade de São Paulo, Instituto de Física, São Paulo, SP, Brazil Centro Atómico Bariloche, Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina Ohio State University, Columbus, OH, United States Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Buenos Aires, Argentina Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina Universidad Nacional Autónoma de México, Distrito Federal, Mexico Universidad de Santiago de Compostela, Santiago de Compostela, Spain Universität Hamburg, II. Institut für Theoretische Physik, Hamburg, Germany Università di Napoli Federico II, Sezione INFN, Napoli, Italy IMAPP, Radboud University Nijmegen, Nijmegen, Netherlands Università di Catania and Sezione INFN, Catania, Italy Department of Physics and Astronomy, Lehman College, City University of New York, Bronx, NY, United States Universidad Complutense de Madrid, Madrid, Spain University of Bucharest, Physics Department, Bucharest, Romania Universidad Industrial de Santander, Bucaramanga, Colombia Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, Paris, France Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Malargüe, Argentina New York University, New York, NY, United States University Politehnica of Bucharest, Bucharest, Romania Karlsruhe Institute of Technology, Institut für Experimentelle Kernphysik (IEKP), Karlsruhe, Germany Bergische Universität Wuppertal, Fachbereich C - Physik, Wuppertal, Germany University of Adelaide, Adelaide, SA, Australia Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, Grenoble, France Max-Planck-Institut für Radioastronomie, Bonn, Germany Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic Dipartimento di Matematica e Fisica E. de Giorgi, Università Del Salento, Sezione INFN, Lecce, Italy Karlsruhe Institute of Technology, Institut für Kernphysik, Karlsruhe, Germany INFN, Laboratori Nazionali Del Gran Sasso, Assergi (L'Aquila), Italy Universidade Federal Do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil Institute of Nuclear Physics PAN, Krakow, Poland Colorado State University, Fort Collins, CO, United States Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany Universidad de Granada, C.A.F.P.E., Granada, Spain Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, Mexico Università di Milano, Sezione INFN, Milan, Italy Università di Roma II Tor Vergata, Sezione INFN, Roma, Italy Institute of Space Science, Bucharest-Magurele, Romania Università di Torino, Sezione INFN, Torino, Italy Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil Pennsylvania State University, University Park, PA, United States Observatorio Pierre Auger, Malargüe, Argentina Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris 11, CNRS-IN2P3, Orsay, France Case Western Reserve University, Cleveland, OH, United States University of Chicago, Enrico Fermi Institute, Chicago, IL, United States SUBATECH, École des Mines de Nantes, CNRS-IN2P3, Université de Nantes, Nantes, France Station de Radioastronomie de Nanćay, Observatoire de Paris, CNRS/INSU, Nançay, France Instituto de Astronomía y Física Del Espacio (IAFE, CONICET-UBA), Buenos Aires, Argentina Departamento de Física, FCEyN, Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina Universidade Federal Fluminense, EEIMVR, Volta Redonda, RJ, Brazil Nikhef, Science Park, Amsterdam, Netherlands Universidade de São Paulo, Instituto de Física de São Carlos, São Carlos, SP, Brazil Universidad de Alcalá, Alcalá de Henares, Madrid, Spain Michigan Technological University, Houghton, MI, United States Dipartimento di Scienze Fisiche e Chimiche, Università dell'Aquila, INFN, L'Aquila, Italy KVI - Center for Advanced Radiation Technology, University of Groningen, Groningen, Netherlands IFLP, Universidad Nacional de la Plata, CONICET, La Plata, Argentina ASTRON, Dwingeloo, Netherlands Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia Laboratory for Astroparticle Physics, University of Nova Gorica, Nova Gorica, Slovenia Instituto de Física de Rosario (IFIR), CONICET/U.N.R., Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina Instituto de Tecnologías en Detección y Astropartículas (CNEA, CONICET, UNSAM), Universidad Tecnológica Nacional, Facultad Regional Mendoza (CONICET/CNEA), Mendoza, Argentina Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany University of Łódź, Łódź, Poland University of Hawaii, Honolulu, HI, United States Universidade Estadual de Feira de Santana, Feira de Santana, Brazil Palacky University, RCPTM, Olomouc, Czech Republic Colorado School of Mines, Golden, CO, United States University of New Mexico, Albuquerque, NM, United States Universidade Federal Do ABC, Santo André, SP, Brazil Benemérita Universidad Autónoma de Puebla, Puebla, Mexico Centro de Investigación y de Estudios Avanzados Del IPN (CINVESTAV), México, Distrito Federal, Mexico Louisiana State University, Baton Rouge, LA, United States Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, RJ, Brazil Universidade Federal de Pelotas, Pelotas, RS, Brazil Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF, CONICET, Villa Martelli, Argentina Northeastern University, Boston, MA, United States U. Profesional Interdisciplinaria en Ing. y Tecnologias Avanzadas Del Instituto Politecnico Nacional, México, Distrito Federal, Mexico Universidade Federal da Bahia, Salvador, BA, Brazil University of Nebraska, Lincoln, NE, United States Gran Sasso Science Institute (INFN), L'Aquila, Italy Vrije Universiteit Brussel, Brussels, Belgium Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy Universidade de São Paulo, Escola de Engenharia de Lorena, Lorena, SP, Brazil School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom |
Año: | 2016 |
Volumen: | 93 |
Número: | 12 |
DOI: | http://dx.doi.org/10.1103/PhysRevD.93.122005 |
Título revista: | Physical Review D |
Título revista abreviado: | Phy. Rev. D |
ISSN: | 24700010 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24700010_v93_n12_p_Multitudinario |