{ "id": "1008.3999", "version": "v2", "published": "2010-08-24T09:54:27.000Z", "updated": "2011-01-05T16:37:34.000Z", "title": "Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV", "authors": [ "Fermi LAT collaboration" ], "comment": "20 pages, 23 figures, 2 tables, published in Physical Review D 82, 092004 (2010) - contact authors: C. Sgro', A. Moiseev", "journal": "Phys.Rev.D82:092004,2010", "doi": "10.1103/PhysRevD.82.092004", "categories": [ "astro-ph.HE", "hep-ex", "hep-ph" ], "abstract": "We present the results of our analysis of cosmic-ray electrons using about 8 million electron candidates detected in the first 12 months on-orbit by the Fermi Large Area Telescope. This work extends our previously-published cosmic-ray electron spectrum down to 7 GeV, giving a spectral range of approximately 2.5 decades up to 1 TeV. We describe in detail the analysis and its validation using beam-test and on-orbit data. In addition, we describe the spectrum measured via a subset of events selected for the best energy resolution as a cross-check on the measurement using the full event sample. Our electron spectrum can be described with a power law $\\propto {\\rm E}^{-3.08 \\pm 0.05}$ with no prominent spectral features within systematic uncertainties. Within the limits of our uncertainties, we can accommodate a slight spectral hardening at around 100 GeV and a slight softening above 500 GeV.", "revisions": [ { "version": "v2", "updated": "2011-01-05T16:37:34.000Z" } ], "analyses": { "subjects": [ "96.50.sb", "98.70.Sa", "95.35.+d", "95.85.Ry" ], "keywords": [ "fermi lat observations", "fermi large area telescope", "million electron candidates", "prominent spectral features", "full event sample" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review D", "year": 2010, "month": "Nov", "volume": 82, "number": 9, "pages": "092004" }, "note": { "typesetting": "TeX", "pages": 20, "language": "en", "license": "arXiv", "status": "editable", "inspire": 866046, "adsabs": "2010PhRvD..82i2004A" } } }