@article{b18c358ad2a94c3eab5090dd00e537ef,
title = "Features of the energy spectrum of cosmic rays above 2.5×1018 eV using the pierre auger observatory",
abstract = "We report a measurement of the energy spectrum of cosmic rays above 2.5×1018 eV based on 215 030 events. New results are presented: at about 1.3×1019 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 5×1019 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 5×1018 eV is [5.66±0.03(stat)±1.40(syst)]×1053 erg Mpc-3.",
author = "{(The Pierre Auger Collaboration)} and A. Aab and P. Abreu and M. Aglietta and Albury, {J. M.} and I. Allekotte and A. Almela and {Alvarez Castillo}, J. and J. Alvarez-Mu{\~n}iz and {Alves Batista}, R. and Anastasi, {G. A.} and L. Anchordoqui and B. Andrada and S. Andringa and C. Aramo and {Ara{\'u}jo Ferreira}, {P. R.} and H. Asorey and P. Assis and G. Avila and Badescu, {A. M.} and A. Bakalova and A. Balaceanu and F. Barbato and {Barreira Luz}, {R. J.} and Becker, {K. H.} and Bellido, {J. A.} and C. Berat and Bertaina, {M. E.} and X. Bertou and Biermann, {P. L.} and T. Bister and J. Biteau and A. Blanco and J. Blazek and C. Bleve and M. Boh{\'a}{\v c}ov{\'a} and D. Boncioli and C. Bonifazi and {Bonneau Arbeletche}, L. and N. Borodai and Botti, {A. M.} and J. Brack and T. Bretz and Briechle, {F. L.} and P. Buchholz and A. Bueno and S. Buitink and M. Buscemi and Caballero-Mora, {K. S.} and L. Caccianiga and M. Mostaf{\'a}",
note = "Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.",
year = "2020",
month = sep,
doi = "10.1103/PhysRevLett.125.121106",
language = "English (US)",
volume = "125",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "12",
}