ETD

Archivio digitale delle tesi discusse presso l'Università di Pisa

Tesi etd-03142018-183816


Tipo di tesi
Tesi di dottorato di ricerca
Autore
MANFREDA, ALBERTO
URN
etd-03142018-183816
Titolo
Cosmic-ray electrons and positrons with the Fermi Large Area Telescope
Settore scientifico disciplinare
FIS/05
Corso di studi
FISICA
Relatori
tutor Prof. Baldini, Luca
commissario Prof. Baldini, Alessandro
commissario Prof. Marrocchesi, Piersimone
commissario Prof. Charles, Eric
commissario Prof. Sozzi, Marco
Parole chiave
  • spectrum
  • pass 8
Data inizio appello
16/03/2018
Consultabilità
Completa
Riassunto
In this work it is described a measurement of the cosmic ray inclusive electron and positron spectrum performed with 7 years of data collected by the Fermi Large Area Telescope, covering the energy range from 7 Gev to 2 TeV. The analysis reduces the statistical and systematics uncertainties compared to previous Fermi measurements and eliminates also some unaccounted bias which affected them in the low energy region. The spectrum found is well described by a broken power-law, with a break at 53±8 GeV and spectral index of -3.21 ± 0.02 below the break and -3.07 ± 0.02(stat+syst) ± 0.04 (energy scale) above. The predicted deviation from power-law behavior above 1 TeV is not confirmed by the data.
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