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Cosmic-Ray Electron Flux Measured by the PAMELA Experiment between 1 and 625 GeV

Adriani, O. (author)
Barbarino, G. C. (author)
Bazilevskaya, G. A. (author)
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Bellotti, R. (author)
Boezio, M. (author)
Bogomolov, E. A. (author)
Bongi, M. (author)
Bonvicini, V. (author)
Borisov, S. (author)
Bottai, S. (author)
Bruno, A. (author)
Cafagna, F. (author)
Campana, D. (author)
Carbone, R. (author)
Carlson, Per (author)
KTH,Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysik
Casolino, M. (author)
Castellini, G. (author)
Consiglio, L. (author)
Pearce, Mark, 1970- (author)
KTH,Partikel- och astropartikelfysik
De Santis, C. (author)
De Simone, N. (author)
Di Felice, V. (author)
Galper, A. M. (author)
Gillard, William (author)
KTH,Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysik
Grishantseva, L. (author)
Jerse, G. (author)
Karelin, A. V. (author)
Koldashov, S. V. (author)
Krutkov, S. Y. (author)
Kvashnin, A. N. (author)
Leonov, A. (author)
Malakhov, V. (author)
Malvezzi, V. (author)
Marcelli, L. (author)
Mayorov, A. G. (author)
Menn, W. (author)
Mikhailov, V. V. (author)
Mocchiutti, E. (author)
Monaco, A. (author)
Mori, N. (author)
Nikonov, N. (author)
Osteria, G. (author)
Palma, F. (author)
Papini, P. (author)
Pearce, M. (author)
Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC)
Picozza, P. (author)
Pizzolotto, C. (author)
Ricci, M. (author)
Ricciarini, S. B. (author)
Rossetto, Laura (author)
KTH,Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysik
Sarkar, R. (author)
Simon, M. (author)
Sparvoli, R. (author)
Spillantini, P. (author)
Stochaj, S. J. (author)
Stockton, J. C. (author)
Stozhkov, Y. I. (author)
Vacchi, A. (author)
Vannuccini, E. (author)
Vasilyev, G. (author)
Voronov, S. A. (author)
Wu, Juan (author)
KTH,Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysik
Yurkin, Y. T. (author)
Zampa, G. (author)
Zampa, N. (author)
Zverev, V. G. (author)
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 (creator_code:org_t)
2011
2011
English.
In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 106:20, s. 201101-
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • Precision measurements of the electron component in the cosmic radiation provide important information about the origin and propagation of cosmic rays in the Galaxy. Here we present new results regarding negatively charged electrons between 1 and 625 GeV performed by the satellite-borne experiment PAMELA. This is the first time that cosmic-ray e(-) have been identified above 50 GeV. The electron spectrum can be described with a single power-law energy dependence with spectral index -3.18 +/- 0.05 above the energy region influenced by the solar wind (> 30 GeV). No significant spectral features are observed and the data can be interpreted in terms of conventional diffusive propagation models. However, the data are also consistent with models including new cosmic-ray sources that could explain the rise in the positron fraction.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

Physics

Publication and Content Type

ref (subject category)
art (subject category)

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