Features of the Energy Spectrum of Cosmic Rays above 2.5×10^{18} eV Using the Pierre Auger Observatory

. 2020 Sep 18 ; 125 (12) : 121106.

Status PubMed-not-MEDLINE Jazyk angličtina Země Spojené státy americké Médium print

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid33016715

We report a measurement of the energy spectrum of cosmic rays above 2.5×10^{18} eV based on 215 030 events. New results are presented: at about 1.3×10^{19} eV, the spectral index changes from 2.51±0.03(stat)±0.05(syst) to 3.05±0.05(stat)±0.10(syst), evolving to 5.1±0.3(stat)±0.1(syst) beyond 5×10^{19} eV, while no significant dependence of spectral features on the declination is seen in the accessible range. These features of the spectrum can be reproduced in models with energy-dependent mass composition. The energy density in cosmic rays above 5×10^{18} eV is [5.66±0.03(stat)±1.40(syst)]×10^{53} erg Mpc^{-3}.

Benemérita Universidad Autónoma de Puebla Puebla México

Bergische Universität Wuppertal Department of Physics Wuppertal Germany

Case Western Reserve University Cleveland OH USA

Center for Astrophysics and Cosmology University of Nova Gorica Nova Gorica Slovenia

Centro Atómico Bariloche and Instituto Balseiro San Carlos de Bariloche Argentina

Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro RJ Brazil

Centro de Investigación y de Estudios Avanzados del IPN México D F México

Centro de Investigaciones en Láseres y Aplicaciones CITEDEF and CONICET Villa Martelli Argentina

Centro Federal de Educação Tecnológica Celso Suckow da Fonseca Nova Friburgo Brazil

Charles University Faculty of Mathematics and Physics Institute of Particle and Nuclear Physics Prague Czech Republic

Colorado School of Mines Golden CO USA

Colorado State University Fort Collins CO USA

Departamento de Física and Departamento de Ciencias de la Atmósfera y los Océanos FCEyN Universidad de Buenos Aires and CONICET Buenos Aires Argentina

Department of Physics and Astronomy Lehman College City University of New York Bronx NY USA

Experimental Particle Physics Department J Stefan Institute Ljubljana Slovenia

Fermi National Accelerator Laboratory USA

Gran Sasso Science Institute L'Aquila Italy

Horia Hulubei National Institute for Physics and Nuclear Engineering Bucharest Magurele Romania

IFLP Universidad Nacional de La Plata and CONICET La Plata Argentina

IMAPP Radboud University Nijmegen Nijmegen The Netherlands

INFN Laboratori Nazionali del Gran Sasso Assergi Italy

INFN Sezione di Catania Catania Italy

INFN Sezione di Lecce Lecce Italy

INFN Sezione di Milano Milano Italy

INFN Sezione di Napoli Napoli Italy

INFN Sezione di Roma Tor Vergata Roma Italy

INFN Sezione di Torino Torino Italy

Institute of Nuclear Physics PAN Krakow Poland

Institute of Physics of the Czech Academy of Sciences Prague Czech Republic

Institute of Space Science Bucharest Magurele Romania

Instituto de Astronomía y Física del Espacio Buenos Aires Argentina

Instituto de Física de Rosario CONICET U N R and Facultad de Ciencias Bioquímicas y Farmacéuticas U N R Rosario Argentina

Instituto de Tecnologías en Detección y Astropartículas Buenos Aires Argentina

Instituto de Tecnologías en Detección y Astropartículas Mendoza Argentina

Instituto Galego de Física de Altas Enerxías Universidade de Santiago de Compostela Santiago de Compostela Spain

Karlsruhe Institute of Technology Institut für Kernphysik Karlsruhe Germany

Karlsruhe Institute of Technology Institut für Prozessdatenverarbeitung und Elektronik Karlsruhe Germany

Karlsruhe Institute of Technology Institute for Experimental Particle Physics Karlsruhe Germany

Karlsruhe Institute of Technology Karlsruhe Germany

KVI Center for Advanced Radiation Technology University of Groningen Groningen The Netherlands

Laboratoire de Physique Nucléaire et de Hautes Energies Universités Paris 6 et Paris 7 CNRS IN2P3 Paris France

Laboratório de Instrumentação e Física Experimental de Partículas LIP and Instituto Superior Técnico IST Universidade de Lisboa UL Lisboa Portugal

Louisiana State University Baton Rouge LA USA

lso at Radboud Universtiy Nijmegen Nijmegen The Netherlands

Max Planck Institut für Radioastronomie Bonn Germany

Michigan Technological University Houghton MI USA

Nationaal Instituut voor Kernfysica en Hoge Energie Fysica Science Park Amsterdam The Netherlands

New York University New York NY USA

Observatorio Pierre Auger and Comisión Nacional de Energía Atómica Malargüe Argentina

Observatorio Pierre Auger Malargüe Argentina

Osservatorio Astrofisico di Torino Torino Italy

ow at Hakubi Center for Advanced Research and Graduate School of Science Kyoto University Kyoto Japan

Palacky University RCPTM Olomouc Czech Republic

Pennsylvania State University University Park PA USA

Politecnico di Milano Dipartimento di Scienze e Tecnologie Aerospaziali Milano Italy

RWTH Aachen University 3 Physikalisches Institut A Aachen Germany

School of Physics and Astronomy University of Leeds Leeds United Kingdom

Stichting Astronomisch Onderzoek in Nederland Dwingeloo The Netherlands

Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas del Instituto Politécnico Nacional México D F México

Universidad Autónoma de Chiapas Tuxtla Gutiérrez Chiapas México

Universidad de Granada and C A F P E Granada Spain

Universidad de Medellín Medellín Colombia

Universidad Industrial de Santander Bucaramanga Colombia

Universidad Nacional Autónoma de México México D F México

Universidad Tecnológica Nacional Facultad Regional Buenos Aires Buenos Aires Argentina

Universidade de São Paulo Escola de Engenharia de Lorena Lorena SP Brazil

Universidade de São Paulo Instituto de Física de São Carlos 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 Feira de Santana Brazil

Universidade Federal de Alfenas Poços de Caldas Brazil

Universidade Federal do ABC Santo André SP Brazil

Universidade Federal do Paraná Setor Palotina Palotina Brazil

Universidade Federal do Rio de Janeiro Instituto de Física Rio de Janeiro RJ Brazil

Universidade Federal do Rio de Janeiro Observatório do Valongo Rio de Janeiro RJ Brazil

Universidade Federal Fluminense EEIMVR Volta Redonda RJ Brazil

Università del Salento Dipartimento di Matematica e Fisica E De Giorgi Lecce Italy

Università dell'Aquila Dipartimento di Scienze Fisiche e Chimiche L'Aquila Italy

Università di Catania Dipartimento di Fisica e Astronomia Catania Italy

Università di Milano Dipartimento di Fisica Milano Italy

Università di Napoli Federico 2 Dipartimento di Fisica Ettore Pancini Napoli Italy

Università di Roma Tor Vergata Dipartimento di Fisica Roma Italy

Università Torino Dipartimento di Fisica Torino Italy

Universität Hamburg 2 Institut für Theoretische Physik Hamburg Germany

Universität Siegen Fachbereich 7 Physik Experimentelle Teilchenphysik Siegen Germany

Université Grenoble Alpes CNRS Grenoble Institute of Engineering Université Grenoble Alpes LPSC IN2P3 38000 Grenoble France France

Université Libre de Bruxelles Brussels Belgium

Université Paris Saclay CNRS IN2P3 IJCLab Orsay France France

Universiteit van Amsterdam Faculty of Science Amsterdam The Netherlands

University of Adelaide Adelaide S A Australia

University of Chicago Enrico Fermi Institute Chicago IL USA

University of Delaware Department of Physics and Astronomy Bartol Research Institute Newark DE USA

University of Łódź Faculty of Astrophysics Łódź Poland

University of Łódź Faculty of High Energy Astrophysics Łódź Poland

University Politehnica of Bucharest Bucharest Romania

Vrije Universiteit Brussels Brussels Belgium

Citace poskytuje Crossref.org

Najít záznam

Citační ukazatele

Nahrávání dat ...

Možnosti archivace

Nahrávání dat ...