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Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope

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arxiv 0905.0025 v1 pith:YWPY6GUW submitted 2009-04-30 astro-ph.HE hep-exhep-ph

Fermi/LAT Collaboration This is my paper · ORCID
classification astro-ph.HEhep-exhep-ph
keywords electronlargespectrumareafermigamma-raymeasurementtelescope
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Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2m^2 sr at 300 GeV. Building on the gamma-ray analysis, we have developed an efficient electron detection strategy which provides sufficient background rejection for measurement of the steeply-falling electron spectrum up to 1 TeV. Our high precision data show that the electron spectrum falls with energy as E^(-3.0) and does not exhibit prominent spectral features. Interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.

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Cited by 3 Pith papers

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