Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 4, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2017/04/038
Keywords
ultra high energy cosmic rays; cosmic ray experiments; cosmic ray theory; inter-galactic media
Funding
- Argentina - Comision Nacional de Energia Atomica
- Argentina - Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT)
- Argentina - Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
- Argentina - Gobierno de la Provincia de Mendoza
- Argentina - Municipalidad de Malargue
- Argentina - NDM Holdings
- Australia - the Australian Research Council
- Brazil - Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Brazil - Financiadora de Estudos e Projetos (FINEP)
- Brazil - Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ)
- Brazil - Sao Paulo Research Foundation (FAPESP) [2010/07359-6, 1999/05404-3]
- Brazil - Ministerio de Ciencia e Tecnologia (MCT)
- Brazil - Czech Republic [MSMT CR LG15014, LO1305, LM2015038]
- Brazil - Czech Science Foundation [14-17501S]
- France - Centre de Calcul IN2P3/CNRS
- France - Centre National de la Recherche Scientifique (CNRS)
- France - Conseil Regional Ile-de-France
- France -Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS)
- France -Departement Sciences de l'Univers (SDU-INSU/CNRS)
- France -Institut Lagrange de Paris (ILP) within the Investissements d'Avenir Programme [LABEX ANR-10-LABX-63, ANR-11-IDEX-0004-02]
- Germany - Bundesministerium fur Bildung und Forschung (BMBF)
- Germany - Deutsche Forschungsgemeinschaft (DFG)
- Germany - Finanzministerium Baden-Wurttemberg
- Germany - Helmholtz Alliance for Astroparticle Physics (HAP)
- Germany - Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)
- Germany - Ministerium fur Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen
- Germany - Ministerium fur Wissenschaft, Forschung und Kunst des Landes Baden-Wurttemberg
- Italy - Istituto Nazionale di Fisica Nucleare (INFN)
- Italy - Istituto Nazionale di Astrofisica (INAF)
- Italy - Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR)
- Italy - CETEMPS Center of Excellence
- Italy - Ministero degli Affari Esteri (MAE)
- Mexico - Consejo Nacional de Ciencia y Tecnologia (CONACYT) [167733]
- Mexico - Universidad Nacional Autonoma de Mexico (UNAM)
- Mexico - PAPIIT DGAPA-UNAM
- The Netherlands - Ministerie van Onderwijs, Cultuur en Wetenschap
- The Netherlands - Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
- The Netherlands - Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Poland - National Centre for Research and Development [ERA-NET-ASPERA/01/11, ERA-NET-ASPERA/02/11]
- Poland - National Science Centre [2013/08/M/ST9/00322, 2013/08/M/ST9/00728, HARMONIA - 5 2013/10 M/ST9/00062]
- Portugal - Portuguese national funds
- Portugal - FEDER funds within Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia (COMPETE)
- Romania - Romanian Authority for Scientific Research ANCS
- Romania - CNDI-UEFISCDI [20/2012, 194/2012, PN 16 42 01 02]
- Slovenia - Slovenian Research Agency
- Spain - Comunidad de Madrid
- Spain - Fondo Europeo de Desarrollo Regional (FEDER) funds
- Spain - Ministerio de Economia y Competitividad
- Spain - Xunta de Galicia
- Spain - European Community 7th Framework Program Grant [FP7-PEOPLE-2012-IEF-328826]
- Spain - U.S.A. - Department of Energy [DE-AC02-07CH11359, DE-FR02-04ER41300, DE-FG02-99ER41107, DE-SC0011689]
- Spain - National Science Foundation [0450696]
- Spain - Grainger Foundation
- Spain - Marie Curie-IRSES/EPLANET
- Spain - European Particle Physics Latin American Network
- Spain - European Union 7th Framework Program [PIRSES-2009-GA-246806]
- Spain - European Union's Horizon research and innovation programme [646623]
- Spain - UNESCO
- Argentina - Valle Las Lenas
- European Research Council (ERC) [646623] Funding Source: European Research Council (ERC)
- Direct For Mathematical & Physical Scien
- Division Of Physics [1620661, 0450696] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1212538, 1205534] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1153335] Funding Source: National Science Foundation
Ask authors/readers for more resources
We present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit has been performed for energies above 5.10(18) eV, i.e. the region of the all-particle spectrum above the so-called ankle feature. The astrophysical model we adopted consists of identical sources uniformly distributed in a comoving volume, where nuclei are accelerated through a rigidity-dependent mechanism. The fit results suggest sources characterized by relatively low maximum injection energies, hard spectra and heavy chemical composition. We also show that uncertainties about physical quantities relevant to UHECR propagation and shower development have a non-negligible impact on the fit results.
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