RT Journal Article T1 Impact of atmospheric effects on the energy reconstruction of air showers observed by the surface detectors of the Pierre Auger Observatory A1 Arqueros Martínez, Fernando A1 García Pinto, Diego A1 Minaya Flores, Ignacio Andrés A1 Vázquez Peñas, José Ramón AB Atmospheric conditions, such as the pressure (P), temperature (T) or air density (rho proportional to P/T), affect the development of extended air showers initiated by energetic cosmic rays. We study the impact of the atmospheric variations on the reconstruction of air showers with data from the arrays of surface detectors of the Pierre Auger Observatory, considering separately the one with detector spacings of 1500m and the one with 750m spacing. We observe modulations in the event rates that are due to the influence of the air density and pressure variations on the measured signals, from which the energy estimators are obtained. We show how the energy assignment can be corrected to account for such atmospheric effects. PB IOP Publishing LTD SN 1748-0221 YR 2017 FD 2017-02 LK https://hdl.handle.net/20.500.14352/17892 UL https://hdl.handle.net/20.500.14352/17892 LA eng NO © 2017 IOP Publishing Ltd and Sissa Medialab srl.Artículo firmado por más de 10 autores.The successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargue. We are very grateful to the following agencies and organizations for financial support: Argentina - Comision Nacional de Energia Atomica; Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Gobierno de la Provincia de Mendoza; Municipalidad de Malargue; NDM Holdings and Valle Las Lenas; in gratitude for their continuing cooperation over land access; Australia - the Australian Research Council; Brazil - Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq); Financiadora de Estudos e Projetos (FINEP); Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ); Sao Paulo Research Foundation (FAPESP) Grants No. 2010/07359-6 and No. 1999/05404-3; Ministerio de Ciencia e Tecnologia (MCT); Czech Republic - Grant No. MSMT CR LG15014, LO1305 and LM2015038 and the Czech Science Foundation Grant No. 14-17501S; France-Centre de Calcul IN2P3/CNRS; Centre National de la Recherche Scientifique (CNRS); Conseil Regional Ile-de-France; Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS); Departement Sciences de l'Univers (SDU-INSU/CNRS); Institut Lagrange de Paris (ILP) Grant No. LABEX ANR-10-LABX-63 within the Investissements d'Avenir Programme Grant No. ANR-11-IDEX-0004-02; Germany - Bundesministerium fur Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); Finanzministerium Baden-Wurttemberg; Helmholtz Alliance for Astroparticle Physics (HAP); Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF); Ministerium fur Innovation, Wissenschaft und Forschung des Landes Nordrhein Westfalen; Ministerium fur Wissenschaft, Forschung und Kunst des Landes Baden-Wurttemberg; Italy - Istituto Nazionale di Fisica Nucleare (INFN); Istituto Nazionale di Astrofisica (INAF); Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR); Gran Sasso Center for Astroparticle Physics (CFA); CETEMPS Center of Excellence; Ministero degli Affari Esteri (MAE); Mexico - Consejo Nacional de Ciencia y Tecnologia (CONACYT) No. 167733; Universidad Nacional Autonoma de Mexico (UNAM); PAPIIT DGAPA-UNAM; The Netherlands - Ministerie van Onderwijs, Cultuur en Wetenschap; Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO); Stichting voor Fundamenteel Onderzoek der Materie (FOM); Poland - National Centre for Research and Development, Grants No. ERA-NET-ASPERA/01/11 and No. ERA-NET-ASPERA/02/11; National Science Centre, Grants No. 2013/08/M/ST9/00322, No. 2013/08/M/ST9/00728 and No. HARMONIA 5 - 2013/10/M/ST9/00062; Portugal - Portuguese national funds and FEDER funds within Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia (COMPETE); Romania - Romanian Authority for Scientific Research ANCS; CNDI-UEFISCDI partnership projects Grants No. 20/2012 and No. 194/2012 and PN 16 42 01 02; Slovenia - Slovenian Research Agency; Spain - Comunidad de Madrid; Fondo Europeo de Desarrollo Regional (FEDER) funds; Ministerio de Economia y Competitividad; Xunta de Galicia; European Community 7th Framework Program Grant No. FP7-PEOPLE-2012-IEF-328826; United Kingdom - Science and Technology Facilities Council; U.S.A.-Department of Energy, ContractsNo. DE-AC02-07CH11359, No. DE-FR02-04ER41300, No. DE-FG02-99ER41107 and No. DE-SC0011689; National Science Foundation, Grant No.; 0450696; The Grainger Foundation; Vietnam - NAFOSTED; Marie Curie-IRSES/EPLANET; European Particle Physics Latin American Network; European Union 7th Framework Program, Grant No. PIRSES-2009-GA-246806; and UNESCO. NO Unión Europea. FP7 NO Ministerio de Economía y Competitividad (MINECO) NO Czech Republic NO Centre National de la Recherche Scientifique (CNRS) NO Conseil Regional Ile-de-France NO Departement Physique Nuclaire et Corpusculaire (PNC-IN2P3/CNRS) NO Departement Sciences de I'Univers (SDU-INSU/CNRS), France NO Bundesministerium fur Bildung und Forschung (BMBF) NO Deutsche Forschungsgerneinschaft (DFG) NO Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF NO Finanzministerium Baden-Wurttemberg NO Ministerium fur Wissenschaft und Forschung Nordrhein-Westfalen NO Ministerium fur Wissenschaft NO Forschung und Kunst NO Baden-Wurttemberg, Germany NO Istituto Nazionale di Fisica Nucleare (INFN) NO Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy NO Ministerie van Onderwijs NO Cultuur en Wetenschap NO Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) NO Stichting voor Fundamenteel Onderzoek der Materie (FOM), The Netherlands NO Ministry of Science and Higher Education, Poland NO Centre de Calcul IN2P3/CNRS NO Fundacao para a Ciencia e a Tecnologia, Portugal NO Ministry for Higher Education, Science, and Technology, Slovenian Research Agency, Slovenia NO Comunidad de Madrid NO Consejeria de Educacion de la Comunidad de Castilla La Mancha NO Xunta de Galicia, Spain NO Science and Technology Facilities Council, United Kingdom NO Department of Energy NO National Science Foundation NO UNESCO DS Docta Complutense RD 24 abr 2025