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Measurement of the Cosmic Raye++e−Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Journal 04 May 2009Embargo end date: 01 Jan 2009 France, United States, Japan, France, France, Australia, United States, France, France, Italy, China (People's Republic of), France, France, China (People's Republic of) Publisher:American Physical Society (APS)Journal:Physical Review Letters, volume 102 (issn: 0031-9007, eissn: 1079-7114,

Authors: A. A. Abdo; 1; M. Ackermann; M. Ajello; W. B. Atwood; M. Axelsson; 5; +193 Authors

A. A. Abdo; 1; M. Ackermann; M. Ajello; W. B. Atwood; M. Axelsson; 5; BALDINI, LUCA; J. Ballet; G. Barbiellini; D. Bastieri; M. Battelino; B. M. Baughman; K. Bechtol; R. Bellazzini; B. Berenji; R. D. Blandford; E. D. Bloom; G. Bogaert; E. Bonamente; A. W. Borgland; J. Bregeon; A. Brez; M. Brigida; P. Bruel; T. H. Burnett; G. A. Caliandro; R. A. Cameron; P. A. Caraveo; P. Carlson; J. M. Casandjian; C. Cecchi; E. Charles; A. Chekhtman; C. C. Cheung; J. Chiang; 3 S. Ciprini; R. Claus; J. Cohen Tanugi; L. R. Cominsky; J. Conrad; 3; S. Cutini; C. D. Dermer; A. deAngelis; F. dePalma; S. W. Digel; i. Bernardo; E. doCoutoeSilva; P. S. Drell; R. Dubois; D. Dumora; Y. Edmonds; C. Farnier; C. Favuzzi; W. B. Focke; M. Frailis; Y. Fukazawa; S. Funk; P. Fusco; 1.D. Gaggero; 7.F. Gargano; 1.9.D. Gasparrini; N. Gehrels; 3; 3.3.S. Germani; B. Giebels; N. Giglietto; F. Giordano; T. Glanzman; G. Godfrey; D. Grasso; A. Grenier; M. H. Grondin; J. E. Grove; L. Guillemot; S. Guiriec; 3. Hanabata; A. K. Harding; R. C. Hartman; M. Hayashida; 3 E. Hays; 2.3.R. E. Hughes; 14 G. J ́ohannesson; 3.A. S. Johnson; 3.R. P. Johnson; 4.W. N. Johnson; 2.T. Kamae; 3 H. Katagiri; 3.2.J. Kataoka; 3.5.N. Kawai; 36; 3.7.M. Kerr; 2.0.J. Kn ̈ odlseder; 3.8.D. Kocevski; 3.F. Kuehn; 1.4.M. Kuss; 7 J. Lande; 3 L. Latronico; 7 M. Lemoine Goumard; 30; 31 F. Longo; 9; 10 F. Loparco; 18; 19 B. Lott; 30; 31 M. N. Lovellette; 2.P. Lubrano; 16; 17 G. M. Madejski; 3 A. Makeev; 22; MASSAI, MARCO MARIA; 7.M. N. Mazziotta; 19 W. McConville; 23; 33 J. E. McEnery; 23 C. Meurer; 5; 26 P. F. Michelson; 3 W. Mitthumsiri; 3 T. Mizuno; 32 A. A. Moiseev; 39, 33; † C. Monte; 18; 1.9.M. E. Monzani; 3.E. Moretti; 9; 1.0.A. Morselli; 4.0.I. V. Moskalenko; 3.S. Murgia; 3 P. L. Nolan; 3.J. P. Norris; 4.1.E. Nuss; 2.4.T. Ohsugi; 3.2.N. Omodei; 7.E. Orlando; 4.2.J. F. Ormes; 4.1.M. Ozaki; 43 D. Paneque; 3.J. H. Panetta; 3 D. Parent; 30; 31 V. Pelassa; 2.4.M. Pepe; 16; 17 M. Pesce Rollins; 7.F. Piron; 24 M. Pohl; 4.4.T. A. Porter; 4.S. Profumo; 4.S. Rain` o; 18; 1.9.R. Rando; 11; RAZZANO, MASSIMILIANO; 7.A. Reimer; 3.O. Reimer; 3 T. Reposeur; 30; 3.1.S. Ritz; 23; 33 L. S. Rochester; 3.A. Y. Rodriguez; 4.5.R. W. Romani; 3.M. Roth; 2.0.F. Ryde; 5; 13 H. F. W. Sadrozinski; 4.D. Sanchez; 15 A. Sander; 14 P. M. SazParkinson; 4.J. D. Scargle; 4.6.T. L. Schalk; 4 A. Sellerholm; 5; 26 C. Sgr` o; 7.D. A. Smith; 30; 31 P. D. Smith; 14 G. Spandre; 7 P. Spinelli; 18; 19 J. L. Starck; 8 T. E. Stephens; 2.3.M. S. Strickman; 2.A. W. Strong; 4.2.D. J. Suson; 4.7.H. Tajima; 3.H. Takahashi; 3.2.T. Takahashi; 43 T. Tanaka; 3.J. B. Thayer; 3.J. G. Thayer; 3.D. J. Thompson; 2.3.L. Tibaldo; 11; 1.2.O. Tibolla;

doi: 10.1103/physrevlett.102.181101 , 10.48550/arxiv.0905.0025

pmid: 19518855

arXiv: http://arxiv.org/abs/0905.0025 , 0905.0025

handle: 11368/2634960 , 11577/2445570 , 11390/878263 , 11568/206071 , 11589/5144 , 11391/995255 , 11587/516256 , 10722/188361 , 20.500.11937/18851 , 11586/125485

Measurement of the Cosmic Raye++e−Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope

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Abstract

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.

6 pages, 3 figures - submitted to Physical Review Letters on March 19, published online on May 4 - contact authors: L. Latronico, A. Moiseev

Countries

France, United States, Japan, France, France, Australia, United States, France, France, Italy, China (People's Republic of), France, France, China (People's Republic of)

Related Organizations

University of Mary
United States
University of Pisa
Italy
University of North Texas
United States
University System of Ohio
United States
Goddard Space Flight Center
United States

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Keywords

[SDU.ASTR.HE] Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [PHYS.ASTR.HE] Physics/Astrophysics/High Energy Astrophysical Phenomena, Astrophysics, Cosmic Rays propagation, High Energy Physics - Experiment, 98.70.Sa, [SDU.ASTR.HE] Sciences of the Universe/Astrophysics/High Energy Astrophysical Phenomena, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), Cosmic Rays; Dark Matter; Cosmic Rays propagation, Hepph, Electron Detection, Dark Matter, Accuracy, High Energy Astrophysical Phenomena (astro-ph.HE), [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], pion, 96.50.sb; 95.35.+d; 95.85.Ry; 98.70.Sa, Telescopes Astrophysics, Experiment-Hep, 520, High Energy Physics - Phenomenology, 95.35.+d, Astrophysics - High Energy Astrophysical Phenomena, 79 Astrophysics, Composition, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], and other elementary particles; cosmic rays, 95.85.Ry, FOS: Physical sciences, Electrons, 530, Cosmic Ray, muon, Neutrino, Dark matter, Cosmic rays, 96.50.sb, Cosmology And Astronomy, Composition; energy spectra and interactions; Dark matter; Neutrino; muon; pion; and other elementary particles; cosmic rays, [ PHYS.ASTR.HE ] Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Hepex, energy spectra and interactions, Phenomenology-Hep,Astro, [ SDU.ASTR.HE ] Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [PHYS.ASTR.HE] Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE]

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