作者
A Abdul Halim, Pedro Abreu, Marco Aglietta, Ingomar Allekotte, K Almeida Cheminant, Alejandro Almela, Jaime Alvarez-Muñiz, J Ammerman Yebra, Gioacchino Alex Anastasi, Luis Anchordoqui, Belén Andrada, Sofia Andringa, Carla Aramo, PR Araújo Ferreira, Enrico Arnone, JC Arteaga Velázquez, H Asorey, Pedro Assis, Gualberto Avila, Emanuele Avocone, Alina Mihaela Badescu, Alena Bakalova, Alexandru Balaceanu, Felicia Barbato, Jose A Bellido, Corinne Berat, Mario Edoardo Bertaina, Gopal Bhatta, PL Biermann, Virginia Binet, Kathrin Bismark, Teresa Bister, Jonathan Biteau, Jiri Blazek, Carla Bleve, Johannes Blümer, Martina Boháčová, Denise Boncioli, Carla Bonifazi, L Bonneau Arbeletche, Nataliia Borodai, Jeffrey Brack, Thomas Bretz, PG Brichetto Orchera, Florian Lukas Briechle, Peter Buchholz, Antonio Bueno, Stijn Buitink, Mario Buscemi, Max Büsken, Anthony Bwembya, Karen S Caballero-Mora, Lorenzo Caccianiga, Ioana Caracas, Rossella Caruso, Antonella Castellina, Fernando Catalani, Gabriella Cataldi, Lorenzo Cazon, Marcos Cerda, Jose Augusto Chinellato, Jiri Chudoba, Ladislav Chytka, Roger W Clay, AC Cobos Cerutti, Roberta Colalillo, Alan Coleman, Maria Rita Coluccia, Ruben Conceição, Antonio Condorelli, Giovanni Consolati, Matteo Conte, Fernando Contreras, Fabio Convenga, D Correia dos Santos, CE Covault, Markus Cristinziani, CS Cruz Sanchez, Sergio Dasso, Kai Daumiller, Bruce R Dawson, Rogerio M de Almeida, Joaquín de Jesús, Sijbrand J de Jong, JRT de Mello Neto, Ivan De Mitri, Jaime de Oliveira, Danelise de Oliveira Franco, Francesco de Palma, Vitor de Souza, Emanuele De Vito, Antonino Del Popolo, Olivier Deligny, Luca Deval, Armando Di Matteo, Madalina Dobre, Carola Dobrigkeit, Juan Carlos d'Olivo, LM Domingues Mendes, RC Dos Anjos, Jan Ebr, Mohamed Eman, Ralph Engel, Italo Epicoco, Martin Erdmann, Alberto Etchegoyen, Heino Falcke, John Farmer, Glennys Farrar, AC Fauth, Norberto Fazzini, Fridtjof Feldbusch, Francesco Fenu, Brian Fick, Juan Manuel Figueira, Andrej Filipčič, Thomas Fitoussi, Benjamin Flaggs, Tomas Fodran, Toshihiro Fujii, Alan Fuster, Cristina Galea, Claudio Galelli, Beatriz García, Hartmut Gemmeke, Flavia Gesualdi, Alexandru Gherghel-Lascu, Piera Luisa Ghia, Ugo Giaccari, Marco Giammarchi, Jonas Glombitza, Fabian Gobbi, Fernando Gollan, Geraldina Golup, M Gómez Berisso, PF Gómez Vitale, Juan Pablo Gongora, Juan Manuel González, Nicolás González, Isabel Goos, Dariusz Góra, Alessio Gorgi, Marvin Gottowik, Trent D Grubb, F Guarino, GP Guedes, E Guido, S Hahn, P Hamal, MR Hampel
发表日期
2023/5/10
期刊
Journal of cosmology and astroparticle physics
卷号
2023
期号
05
页码范围
024
出版商
IOP Publishing
简介
In this work we present the interpretation of the energy spectrum and mass composition data as measured by the Pierre Auger Collaboration above 6× 1017 eV. We use an astrophysical model with two extragalactic source populations to model the hardening of the cosmic-ray flux at around 5× 1018 eV (the so-called “ankle” feature) as a transition between these two components. We find our data to be well reproduced if sources above the ankle emit a mixed composition with a hard spectrum and a low rigidity cutoff. The component below the ankle is required to have a very soft spectrum and a mix of protons and intermediate-mass nuclei. The origin of this intermediate-mass component is not well constrained and it could originate from either Galactic or extragalactic sources. To the aim of evaluating our capability to constrain astrophysical models, we discuss the impact on the fit results of the main experimental …
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AA Halim, P Abreu, M Aglietta, I Allekotte… - Journal of cosmology and astroparticle physics, 2023