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.

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., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - STAMPA. - 95:8(2017). [10.1103/PhysRevD.95.082007]

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

Favuzzi C.;Giglietto N.;
2017

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.
2017
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., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - STAMPA. - 95:8(2017). [10.1103/PhysRevD.95.082007]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/206810
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