INVESTIGADORES
HANSEN Patricia Maria
artículos
Título:
The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION (P HANSEN PERTENECE A LA COLABORACIÓN AUGER)
Revista:
EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Editorial:
SPRINGER
Referencias:
Año: 2021
ISSN:
1434-6044
Resumen:
We present a measurement of the cosmic-rayspectrum above 100 PeV using the part of the surface detectorof the Pierre Auger Observatory that has a spacing of 750 m.An inflection of the spectrum is observed, confirming thepresence of the so-called second-knee feature. The spectrumis then combined with that of the 1500 m array to produce asingle measurement of the flux, linking this spectral featurewith the three additional breaks at the highest energies. Thecombined spectrum, with an energy scale set calorimetricallyvia fluorescence telescopes and using a single detector type,results in the most statistically and systematically precisemeasurement of spectral breaks yet obtained. These mea-surements are critical for furthering our understanding of thehighest energy cosmic rays.