作者
Pedro Abreu, Marco Aglietta, Justin M Albury, Ingomar Allekotte, Alejandro Almela, Jaime Alvarez-Muñiz, R Alves Batista, Gioacchino Alex Anastasi, Luis Anchordoqui, Belén Andrada, Sofia Andringa, Carla Aramo, PR Araújo Ferreira, JC Arteaga Velázquez, H Asorey, Pedro Assis, Gualberto Avila, Alina Mihaela Badescu, Alena Bakalova, Alexandru Balaceanu, Felicia Barbato, RJ Barreira Luz, Karl-Heinz Becker, Jose A Bellido, Corinne Berat, Mario Edoardo Bertaina, Xavier Bertou, PL Biermann, P Billoir, V Binet, K Bismark, T Bister, J Biteau, J Blazek, C Bleve, M Boháčová, D Boncioli, C Bonifazi, L Bonneau Arbeletche, N Borodai, AM Botti, J Brack, T Bretz, PG Brichetto Orchera, FL Briechle, P Buchholz, A Bueno, S Buitink, M Buscemi, M Büsken, KS Caballero-Mora, L Caccianiga, F Canfora, I Caracas, JM Carceller, R Caruso, A Castellina, F Catalani, G Cataldi, L Cazon, M Cerda, JA Chinellato, J Chudoba, L Chytka, RW Clay, AC Cobos Cerutti, R Colalillo, A Coleman, MR Coluccia, R Conceição, A Condorelli, G Consolati, F Contreras, F Convenga, D Correia dos Santos, CE Covault, S Dasso, K Daumiller, BR Dawson, JA Day, RM de Almeida, J de Jesús, SJ de Jong, G De Mauro, JRT de Mello Neto, I De Mitri, J de Oliveira, D de Oliveira Franco, F de Palma, V de Souza, E De Vito, M del Río, O Deligny, A Di Matteo, C Dobrigkeit, JC D’Olivo, LM Domingues Mendes, RC dos Anjos, D dos Santos, MT Dova, J Ebr, R Engel, I Epicoco, M Erdmann, CO Escobar, A Etchegoyen, H Falcke, J Farmer, G Farrar, AC Fauth, N Fazzini, F Feldbusch, F Fenu, B Fick, JM Figueira, A Filipčič, T Fitoussi, T Fodran, MM Freire, T Fujii, A Fuster, C Galea, C Galelli, B García, AL Garcia Vegas, H Gemmeke, F Gesualdi, A Gherghel-Lascu, PL Ghia, U Giaccari, M Giammarchi, J Glombitza, F Gobbi, F Gollan, G Golup, M Gómez Berisso, PF Gómez Vitale, JP Gongora, JM González, N González, I Goos, D Góra, A Gorgi, M Gottowik, TD Grubb, F Guarino, GP Guedes, E Guido, S Hahn, P Hamal
发表日期
2021/11
期刊
The European Physical Journal C
卷号
81
页码范围
1-25
出版商
Springer Berlin Heidelberg
简介
We present a measurement of the cosmic-ray spectrum above 100 PeV using the part of the surface detector of the Pierre Auger Observatory that has a spacing of 750 m. An inflection of the spectrum is observed, confirming the presence of the so-called second-knee feature. The spectrum is then combined with that of the 1500 m array to produce a single measurement of the flux, linking this spectral feature with the three additional breaks at the highest energies. The combined spectrum, with an energy scale set calorimetrically via fluorescence telescopes and using a single detector type, results in the most statistically and systematically precise measurement of spectral breaks yet obtained. These measurements are critical for furthering our understanding of the highest energy cosmic rays.
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P Abreu, M Aglietta, JM Albury, I Allekotte, A Almela… - The European Physical Journal C, 2021