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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
20
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pubmed:dateCreated |
2011-6-14
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pubmed:abstractText |
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.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:status |
PubMed-not-MEDLINE
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pubmed:month |
May
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pubmed:issn |
1079-7114
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pubmed:author |
pubmed-author:AdrianiOO,
pubmed-author:BarbarinoG CGC,
pubmed-author:BazilevskayaG AGA,
pubmed-author:BellottiRR,
pubmed-author:BoezioMM,
pubmed-author:BogomolovE AEA,
pubmed-author:BonguAA,
pubmed-author:BonviciniVV,
pubmed-author:BorisovSS,
pubmed-author:BottaiSS,
pubmed-author:BrunoAA,
pubmed-author:CafagnaFF,
pubmed-author:CampanaDD,
pubmed-author:CarboneRR,
pubmed-author:CarlsonPP,
pubmed-author:CasolinoMM,
pubmed-author:CastelliniGG,
pubmed-author:ConsiglioLL,
pubmed-author:De PascaleM PMP,
pubmed-author:De SantisCC,
pubmed-author:De SimoneNN,
pubmed-author:Di FeliceVV,
pubmed-author:GalperA MAM,
pubmed-author:GillardWW,
pubmed-author:GrishantsevaLL,
pubmed-author:JerseGG,
pubmed-author:KarelinA VAV,
pubmed-author:KoldashovS VSV,
pubmed-author:KrutkovS YSY,
pubmed-author:KvashninA NAN,
pubmed-author:LeonovAA,
pubmed-author:MalakhovVV,
pubmed-author:MalvezziVV,
pubmed-author:MarcelloJJ,
pubmed-author:MayorovA GAG,
pubmed-author:MensRR,
pubmed-author:MikhailovV VVV,
pubmed-author:MocchiuttiEE,
pubmed-author:MonacoAA,
pubmed-author:MoriNN,
pubmed-author:NikonovNN,
pubmed-author:OsteriaGG,
pubmed-author:PalmaFF,
pubmed-author:PapiniPP,
pubmed-author:PearceMM,
pubmed-author:PicozzaPP,
pubmed-author:PizzolottoCC,
pubmed-author:RicciMM,
pubmed-author:RicciariniS BSB,
pubmed-author:RossettoLL,
pubmed-author:SarkarRR,
pubmed-author:SimonMM,
pubmed-author:SparvoliRR,
pubmed-author:SpillantiniPP,
pubmed-author:StochajS JSJ,
pubmed-author:StocktonJ CJC,
pubmed-author:StozhkovY IYI,
pubmed-author:VacchiAA,
pubmed-author:VannucciniEE,
pubmed-author:VasilyevGG,
pubmed-author:VoronovS ASA,
pubmed-author:WuJJ,
pubmed-author:YurkinY TYT,
pubmed-author:ZampaGG,
pubmed-author:ZampaNN,
pubmed-author:ZverevV GVG
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pubmed:issnType |
Electronic
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pubmed:day |
20
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pubmed:volume |
106
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
201101
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pubmed:year |
2011
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pubmed:articleTitle |
Cosmic-ray electron flux measured by the PAMELA experiment between 1 and 625 GeV.
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pubmed:affiliation |
University of Florence, Department of Physics, I-50019 Sesto Fiorentino, Florence, Italy.
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pubmed:publicationType |
Journal Article
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