Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large 
Area Telescope

Abdollahi, S.; Ackermann, M.; Ajello, M.; Atwood, W. B.; Baldini, L.; Barbiellini, G.; Bastieri, D.; Bellazzini, R.; Bloom, E. D.; Bonino, R.; Brandt, T. J.; Bregeon, J.; Bruel, P.; Buehler, R.; Cameron, R. A.; Caputo, R.; Caragiulo, M.; Castro, D.; Cavazzuti, E.; Cecchi, C.; Chekhtman, A.; Ciprini, S.; Cohen-Tanugi, J.; Costanza, F.; Cuoco, A.; Cutini, S.; D'Ammando, F.; de Palma, F.; Desiante, R.; Digel, S. W.; Di Lalla, N.; Di Mauro, M.; Di Venere, L.; Drell, P. S.; Drlica-Wagner, A.; Favuzzi, C.; Focke, W. B.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Giglietto, N.; Giordano, F.; Giroletti, M.; Green, D.; Guillemot, L.; Guiriec, S.; Harding, A. K.; Jogler, T.; Johannesson, G.; Kamae, T.; Kuss, M.; La Mura, G.; Latronico, L.; Longo, F.; Loparco, F.; Lubrano, P.; Maldera, S.; Malyshev, D.; Manfreda, A.; Mazziotta, M. N.; Michelson, P. F.; Mirabal, N.; Mitthumsiri, W.; Mizuno, T.; Moiseev, A. A.; Monzani, M. E.; Morselli, A.; Moskalenko, I. V.; Negro, M.; Nuss, E.; Orlando, E.; Paneque, D.; Perkins, J. S.; Pesce-Rollins, M.; Piron, F.; Pivato, G.; Porter, T. A.; Principe, G.; Raino, S.; Rando, R.; Razzano, M.; Reimer, A.; Reimer , O.; Sgro, C.; Simone, D.; Siskind, E. J.; Spada, F.; Spandre, G.; Spinelli, P.; Tajima, H.; Thayer, J. B.; Tibaldo, Luigi; Torres, D. F.; Troja, E.; Wood, M.; Worley, A.; Zaharijas, G.; Zimmer, S.

doi:10.1103/PhysRevD.95.082007

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Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope

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Tibaldo, Luigi
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Abdollahi, S., Ackermann, M., Ajello, M., Atwood, W. B., Baldini, L., Barbiellini, G., et al. (2017). Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope. Physical Review D, 95(8): 082007. doi:10.1103/PhysRevD.95.082007.

Cite as: https://hdl.handle.net/21.11116/0000-0001-0224-4

Abstract

We present a measurement of the cosmic-ray electron + positron spectrum between 7 GeV and 2 TeV performed with almost seven years of data collected with the Fermi Large Area Telescope. We find that the spectrum is well fit by a broken power law with a break energy at about 50 GeV. Above 50 GeV, the spectrum is well described by a single power law with a spectral index of 3.07 +/- 0.02 (stat +/- syst) +/- 0.04 (energy measurement). An exponential cutoff lower than 1.8 TeV is excluded at 95% CL.