Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station

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dc.contributor.authorM. Aguilar
dc.contributor.organizationfi=avaruustutkimuslaboratorio|en=Space Research Laboratory|
dc.contributor.organization-code2606702
dc.converis.publication-id3979470
dc.converis.urlhttps://research.utu.fi/converis/portal/Publication/3979470
dc.date.accessioned2025-08-28T01:30:46Z
dc.date.available2025-08-28T01:30:46Z
dc.description.abstract<p> A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge of the rigidity dependence of the proton flux is important in understanding the origin, acceleration, and propagation of cosmic rays. We present the detailed variation with rigidity of the flux spectral index for the first time. The spectral index progressively hardens at high rigidities.</p>
dc.identifier.jour-issn0031-9007
dc.identifier.olddbid207647
dc.identifier.oldhandle10024/190674
dc.identifier.urihttps://www.utupub.fi/handle/11111/50651
dc.identifier.urnURN:NBN:fi-fe2021042715474
dc.language.isoen
dc.okm.affiliatedauthorBattarbee, Markus
dc.okm.affiliatedauthorEronen, Timo
dc.okm.affiliatedauthorTorsti, Jarmo
dc.okm.affiliatedauthorValtonen, Eino
dc.okm.discipline115 Astronomy and space scienceen_GB
dc.okm.discipline115 Avaruustieteet ja tähtitiedefi_FI
dc.okm.internationalcopublicationinternational co-publication
dc.okm.internationalityInternational publication
dc.okm.typeA1 ScientificArticle
dc.publisherAmer Physical Soc
dc.publisher.countryUnited Statesen_GB
dc.publisher.countryYhdysvallat (USA)fi_FI
dc.publisher.country-codeUS
dc.relation.articlenumber171103
dc.relation.doi10.1103/PhysRevLett.114.171103
dc.relation.ispartofjournalPhysical Review Letters
dc.relation.issue17
dc.relation.volume114
dc.source.identifierhttps://www.utupub.fi/handle/10024/190674
dc.titlePrecision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station
dc.year.issued2015

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