RT Journal Article
T1 Features of the Energy Spectrum of Cosmic Rays above  2.5 × 10 18  eV  Using the Pierre Auger Observatory
A1 Aab, A.
A1 Álvarez Muñiz, Jaime
A1 Parente Bermúdez, Gonzalo
A1 Zuccarello, F.
K1 Cosmic ray & astroparticle detectors
K1 Cosmic ray aceleration
K1 Cosmic ray composition & spectra
K1 Cosmic ray propagation
K1 Cosmic ray sources
AB 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 1.3×1019eV, 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 5×1019e, 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. .
PB American Physical Society
SN 1079-7114
YR 2020
FD 2020-07-31
LK http://hdl.handle.net/10347/32686
UL http://hdl.handle.net/10347/32686
LA eng
NO Aab, A., Álvarez Muñiz, Jaime, Parente Bermúdez, Gonzalo, Zuccarello, F. et al (2020): Features of the Energy Spectrum of Cosmic Rays above  2.5 × 10 18     eV  Using the Pierre Auger Observatory, en Phys. Rev. Lett. 125 (2020) 121106
NO Xunta de Galicia (ED431C 2017/07), Junta de Andalucía (SOMM17/6104/UGR), Feder Funds, RENATA Red Nacional Temática e  María de Maeztu Unit of Excellence (MDM-2016-0692)
DS Minerva
RD 30 abr 2026