Aller au contenu principal
Accès ouvert déclaré 2024 article

Constraining models for the origin of ultra-high-energy cosmic rays with a novel combined analysis of arrival directions, spectrum, and composition data measured at the Pierre Auger Observatory

33Citations signalées, ce qui n’est pas une note de qualité
97Institutions déclarées
18Pays d’affiliation déclarés

Rattachement africain : au, pt, it, ar, pl, es, us, de, mx, ro, cz, pe, fr, nl, br, be, si, co. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

Abstract The combined fit of the measured energy spectrum and shower maximum depth distributions of ultra-high-energy cosmic rays is known to constrain the parameters of astrophysical models with homogeneous source distributions. Studies of the distribution of the cosmic-ray arrival directions show a better agreement with models in which a fraction of the flux is non-isotropic and associated with the nearby radio galaxy Centaurus A or with catalogs such as that of starburst galaxies. Here, we present a novel combination of both analyses by a simultaneous fit of arrival directions, energy spectrum, and composition data measured at the Pierre Auger Observatory. The model takes into account a rigidity-dependent magnetic field blurring and an energy-dependent evolution of the catalog contribution shaped by interactions during propagation. We find that a model containing a flux contribution from the starburst galaxy catalog of around 20% at 40 EeV with a magnetic field blurring of around 20° for a rigidity of 10 EV provides a fair simultaneous description of all three observables. The starburst galaxy model is favored with a significance of 4.5σ (considering experimental systematic effects) compared to a reference model with only homogeneously distributed background sources. By investigating a scenario with Centaurus A as a single source in combination with the homogeneous background, we confirm that this region of the sky provides the dominant contribution to the observed anisotropy signal. Models containing a catalog of jetted active galactic nuclei whose flux scales with the γ-ray emission are, however, disfavored as they cannot adequately describe the measured arrival directions.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.

Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Constraining models for the origin of ultra-high-energy cosmic rays with a novel combined analysis of arrival directions, spectrum, and composition data measured at the Pierre Auger Observatory
Date Crossref
01/01/2024
Éditeur
IOP Publishing
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

The University of AdelaideUniversity of LisbonLIP - Laboratory of Instrumentation and Experimental Particle PhysicsIstituto Nazionale di Fisica Nucleare, Sezione di TorinoOsservatorio Astrofisico di TorinoConsejo Nacional de Investigaciones Científicas y TécnicasBalseiro InstituteBariloche Atomic CentreInstitute of Nuclear Physics, Polish Academy of SciencesNational Technological UniversityNational University of General San MartínInstituto de Tecnologías en Detección y AstropartículasIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran SassoGran Sasso Science InstituteUniversidade de Santiago de CompostelaLehman CollegeCity University of New YorkIstituto Nazionale di Fisica Nucleare, Sezione di NapoliRWTH Aachen UniversityUniversity of TurinUniversidad Michoacana de San Nicolás de HidalgoComisión Nacional de Energía AtómicaUniversity of L'AquilaUniversitatea Națională de Știință și Tehnologie Politehnica BucureștiFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringColorado School of MinesUniversidad Nacional de San Agustin de ArequipaCentre National de la Recherche ScientifiqueUniversité Grenoble AlpesInstitute of Physics RosarioKarlsruhe Institute of TechnologyRadboud University NijmegenNational Institute for Subatomic PhysicsUniversité Paris-SaclayInstitut National de Physique Nucléaire et de Physique des ParticulesLaboratoire de Physique des 2 Infinis Irène Joliot-CurieUniversidade Federal do Rio de JaneiroInternational Center for Advanced StudiesUniversidade Estadual de Campinas (UNICAMP)Universidad de GranadaVrije Universiteit BrusselIstituto Nazionale di Fisica Nucleare, Sezione di CataniaUniversity of PalermoUniversidad Autónoma de ChiapasUniversity of MilanIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversity of WuppertalUniversity of CataniaUniversidade de São PauloIstituto Nazionale di Fisica Nucleare, Sezione di LeccePierre Auger ObservatoryPalacký University OlomoucUniversity of Naples Federico IIUniversity of DelawarePolitecnico di MilanoUniversity of SalentoUniversidade Federal FluminenseCase Western Reserve UniversityUniversity of SiegenUniversidad Nacional de La PlataUniversidad de Buenos AiresInstitute of Astronomy and Space PhysicsValongo ObservatoryInstituto Federal do Rio de JaneiroUniversidad Nacional Autónoma de MéxicoCentro Brasileiro de Pesquisas FísicasUniversidade Federal do ParanáNetherlands Institute for Radio AstronomyFermi National Accelerator LaboratoryUniversity of ChicagoNew York UniversityMichigan Technological UniversityUniversity of Nova GoricaJožef Stefan InstituteUniversidade Estadual de Feira de SantanaInstitute of Space Science - INFLPR SubsidiaryFederal Center for Technological Education Celso Suckow da FonsecaUniversidade Federal do ABCUniversité Paris CitéSorbonne UniversitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesUniversity of Wisconsin–MadisonUniversité Libre de BruxellesBenemérita Universidad Autónoma de PueblaUniversity of Rome Tor VergataIstituto Nazionale di Fisica Nucleare, Roma Tor VergataInstitute of Scientific and Technical Research for DefenseCharles UniversityIndustrial University of SantanderInstituto Politécnico NacionalUniversidade Federal de Campina GrandeUniversität HamburgIstituto di Astrofisica Spaziale e Fisica cosmica di PalermoUniversity of ŁódźUniversidad de MedellínUniversity of Amsterdam

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Astrophysics and Cosmic PhenomenaDark Matter and Cosmic PhenomenaNeutrino Physics Research

BNTIC News n’est pas le producteur de ces données. Les publications sont interrogées à la demande dans Crossref, OpenAIRE, DOAJ, Europe PMC, HAL, DataCite, AfricArXiv, ROR et la Banque mondiale, sans clé d’accès. OpenAlex reste optionnel. Aucun service payant n’est nécessaire et aucune donnée externe n’est enregistrée en base. Consulter les sources et leurs limites.