Time Dependence Of The Proton Flux Measured By Pamela During The 2006 July-2009 December Solar Minimum
2013 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 765, no 2, 91- p.Article in journal (Refereed) Published
The energy spectra of galactic cosmic rays carry fundamental information regarding their origin and propagation. These spectra, when measured near Earth, are significantly affected by the solar magnetic field. A comprehensive description of the cosmic radiation must therefore include the transport and modulation of cosmic rays inside the heliosphere. During the end of the last decade, the Sun underwent a peculiarly long quiet phase well suited to study modulation processes. In this paper we present proton spectra measured from 2006 July to 2009 December by PAMELA. The large collected statistics of protons allowed the time variation to be followed on a nearly monthly basis down to 400 MV. Data are compared with a state-of-the-art three-dimensional model of solar modulation.
Place, publisher, year, edition, pages
2013. Vol. 765, no 2, 91- p.
cosmic rays, solar wind, Sun: heliosphere
IdentifiersURN: urn:nbn:se:kth:diva-120284DOI: 10.1088/0004-637X/765/2/91ISI: 000315921500016OAI: oai:DiVA.org:kth-120284DiVA: diva2:614858
FunderSwedish Research Council
QC 201304082013-04-082013-04-042013-04-08Bibliographically approved