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Measurement of the Cosmic Ray e(+)+e(-) Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
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2009 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 102, no Article number: 181101Article in journal (Refereed) Published
Abstract [en]

Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2 m(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.

Place, publisher, year, edition, pages
2009. Vol. 102, no Article number: 181101
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Physical Sciences
Research subject
Natural Science, Physics
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URN: urn:nbn:se:hik:diva-2814DOI: 10.1103/PhysRevLett.102.181101ISI: 000265948600011OAI: oai:DiVA.org:hik-2814DiVA, id: diva2:299615
Available from: 2010-02-23 Created: 2010-02-23 Last updated: 2017-12-12Bibliographically approved

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Ylinen, T.

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