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Cosmic-Ray Positron Energy Spectrum Measured by PAMELA
- Adriani, O. (author)
- Barbarino, G. C. (author)
- Bazilevskaya, G. A. (author)
- show more...
- Bellotti, R. (author)
- Bianco, A. (author)
- Boezio, M. (author)
- Bogomolov, E. A. (author)
- Bongi, M. (author)
- Bonvicini, V. (author)
- Bottai, S. (author)
- Bruno, A. (author)
- Cafagna, F. (author)
- Campana, D. (author)
- Carbone, R. (author)
- Casolino, M. (author)
- Castellini, G. (author)
- De Donato, C. (author)
- De Santis, C. (author)
- De Simone, N. (author)
- Di Felice, V. (author)
- Formato, V. (author)
- Galper, A. M. (author)
- Karelin, A. V. (author)
- Koldashov, S. V. (author)
- Koldobskiy, S. A. (author)
- Krutkov, S. Y. (author)
- Kvashnin, A. N. (author)
- Leonov, A. (author)
- Malakhov, V. (author)
- Marcelli, L. (author)
- Martucci, M. (author)
- Mayorov, A. G. (author)
- Menn, W. (author)
- Merge, M. (author)
- Mikhailov, V. V. (author)
- Mocchiutti, E. (author)
- Monaco, A. (author)
- Mori, N. (author)
- Munini, R. (author)
- Osteria, G. (author)
- Palma, F. (author)
- Papini, P. (author)
- Picozza, P. (author)
- Pizzolotto, C. (author)
- Ricci, M. (author)
- Ricciarini, S. B. (author)
- Sarkar, R. (author)
- Scotti, V. (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. I. (author)
- Voronov, S. A. (author)
- Yurkin, Y. T. (author)
- Zampa, G. (author)
- Zampa, N. (author)
- Zverev, V. G. (author)
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- (creator_code:org_t)
- 2013
- 2013
- English.
- In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 111:8, s. 081102-
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Precision measurements of the positron component in the cosmic radiation provide important information about the propagation of cosmic rays and the nature of particle sources in our Galaxy. The satellite-borne experiment PAMELA has been used to make a new measurement of the cosmic-ray positron flux and fraction that extends previously published measurements up to 300 GeV in kinetic energy. The combined measurements of the cosmic-ray positron energy spectrum and fraction provide a unique tool to constrain interpretation models. During the recent solar minimum activity period from July 2006 to December 2009, approximately 24 500 positrons were observed. The results cannot be easily reconciled with purely secondary production, and additional sources of either astrophysical or exotic origin may be required.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Solar Minimum
- Electrons
- Modulation
- Fraction
- Ratio
- Earth
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Physical Review Letters (Search for host publication in LIBRIS)
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- By the author/editor
- Adriani, O.
- Barbarino, G. C.
- Bazilevskaya, G. ...
- Bellotti, R.
- Bianco, A.
- Boezio, M.
- show more...
- Bogomolov, E. A.
- Bongi, M.
- Bonvicini, V.
- Bottai, S.
- Bruno, A.
- Cafagna, F.
- Campana, D.
- Carbone, R.
- Carlson, Per
- Casolino, M.
- Castellini, G.
- De Donato, C.
- De Santis, C.
- De Simone, N.
- Di Felice, V.
- Formato, V.
- Galper, A. M.
- Karelin, A. V.
- Koldashov, S. V.
- Koldobskiy, S. A ...
- Krutkov, S. Y.
- Kvashnin, A. N.
- Leonov, A.
- Malakhov, V.
- Marcelli, L.
- Martucci, M.
- Mayorov, A. G.
- Menn, W.
- Merge, M.
- Mikhailov, V. V.
- Mocchiutti, E.
- Monaco, A.
- Mori, N.
- Munini, R.
- Osteria, G.
- Palma, F.
- Papini, P.
- Pearce, Mark
- Picozza, P.
- Pizzolotto, C.
- Ricci, M.
- Ricciarini, S. B ...
- Rossetto, Laura
- Sarkar, R.
- Scotti, V.
- Simon, M.
- Sparvoli, R.
- Spillantini, P.
- Stochaj, S. J.
- Stockton, J. C.
- Stozhkov, Y. I.
- Vacchi, A.
- Vannuccini, E.
- Vasilyev, G. I.
- Voronov, S. A.
- Yurkin, Y. T.
- Zampa, G.
- Zampa, N.
- Zverev, V. G.
- show less...
- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
- Articles in the publication
- Physical Review ...
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- Royal Institute of Technology
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