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

Aab, A; Abreu, P; Aglietta, M; Albury, J M; Allekotte, I; Almela, A; Alvarez Castillo, J; Alvarez-Muñiz, J; Alves Batista, R; Anastasi, G A; Anchordoqui, L; Andrada, B; Andringa, S; Aramo, C; Araújo Ferreira, P R; Asorey, H; Assis, P; Avila, G; Badescu, A M; Bakalova, A; Balaceanu, A; Barbato, F; Barreira Luz, R J; Becker, K H; Bellido, J A; Berat, C; Bertaina, M E; Bertou, X; Biermann, P L; Bister, T; Biteau, J; Blanco, A; Blazek, J; Bleve, C; Boháčová, M; Boncioli, D; Bonifazi, C; Bonneau Arbeletche, L; Borodai, N; Botti, A M; Brack, J; Bretz, T; Briechle, F L; Buchholz, P; Bueno, A; Buitink, S; Buscemi, M; Caballero-Mora, K S; Caccianiga, L; Calcagni, L; Cancio, A; Canfora, F; Caracas, I; Carceller, J M; Caruso, R; Castellina, A; Catalani, F; Cataldi, G; Cazon, L; Cerda, M; Chinellato, J A; Choi, K; Chudoba, J; Chytka, L; Clay, R W; Cobos Cerutti, A C; Colalillo, R; Coleman, A; Coluccia, M R; Conceição, R; Condorelli, A; Consolati, G; Contreras, F; Convenga, F; Covault, C E; Dasso, S; Daumiller, K; Dawson, B R; Day, J A; de Almeida, R M; de Jesús, J; de Jong, S J; De Mauro, G; de Mello Neto, J R T; De Mitri, I; de Oliveira, J; de Oliveira Franco, D; de Souza, V; De Vito, E; Debatin, J; Del Río, M; Deligny, O; Dembinski, H; Dhital, N; Di Giulio, C; Di Matteo, A; Díaz Castro, M L; Dobrigkeit, C; D'Olivo, J C; Dorosti, Q

doi:10.1103/PhysRevLett.125.121106

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

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ID: 171426

2020

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Abstract

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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}.

Reference Key	aab2020featuresphysical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors	A Aab, P Abreu, M Aglietta, J M Albury, I Allekotte, A Almela, J Alvarez Castillo, J Alvarez-Muñiz, R Alves Batista, G A Anastasi, L Anchordoqui, B Andrada, S Andringa, C Aramo, P R Araújo Ferreira, H Asorey, P Assis, G Avila, A M Badescu, A Bakalova, A Balaceanu, F Barbato, R J Barreira Luz, K H Becker, J A Bellido, C Berat, M E Bertaina, X Bertou, P L Biermann, T Bister, J Biteau, A Blanco, J Blazek, C Bleve, M Boháčová, D Boncioli, C Bonifazi, L Bonneau Arbeletche, N Borodai, A M Botti, J Brack, T Bretz, F L Briechle, P Buchholz, A Bueno, S Buitink, M Buscemi, K S Caballero-Mora, L Caccianiga, L Calcagni, A Cancio, F Canfora, I Caracas, J M Carceller, R Caruso, A Castellina, F Catalani, G Cataldi, L Cazon, M Cerda, J A Chinellato, K Choi, J Chudoba, L Chytka, R W Clay, A C Cobos Cerutti, R Colalillo, A Coleman, M R Coluccia, R Conceição, A Condorelli, G Consolati, F Contreras, F Convenga, C E Covault, S Dasso, K Daumiller, B R Dawson, J A Day, R M de Almeida, J de Jesús, S J de Jong, G De Mauro, J R T de Mello Neto, I De Mitri, J de Oliveira, D de Oliveira Franco, V de Souza, E De Vito, J Debatin, M Del Río, O Deligny, H Dembinski, N Dhital, C Di Giulio, A Di Matteo, M L Díaz Castro, C Dobrigkeit, J C D'Olivo, Q Dorosti Are you one of these authors? Claim your profile
Journal	physical review letters
Year	2020
DOI	10.1103/PhysRevLett.125.121106 Searching for DOI...
URL	https://doi.org/10.1103/PhysRevLett.125.121106
Keywords	Keywords not found

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