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Solar-cycle Variati...
Solar-cycle Variations of South Atlantic Anomaly Proton Intensities Measured with the PAMELA Mission
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- Bruno, A. (author)
- NASA, Heliophys Div, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.;Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA.
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- Carlson, Per (author)
- KTH,Partikel- och astropartikelfysik
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- Pearce, Mark, 1970- (author)
- KTH,Partikel- och astropartikelfysik
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- Zharaspayev, T. R. (author)
- MEPhI Natl Res Nucl Univ MEPhI, RU-115409 Moscow, Russia.
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NASA, Heliophys Div, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA;Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA. Partikel- och astropartikelfysik (creator_code:org_t)
- 2021-08-18
- 2021
- English.
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In: Astrophysical Journal Letters. - : American Astronomical Society. - 2041-8205 .- 2041-8213. ; 917:2
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Abstract
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- We present a study of the solar-cycle variations of >80 MeV proton flux intensities in the lower edge of the inner radiation belt, based on the measurements of the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) mission. The analyzed data sample covers an similar to 8 yr interval from 2006 July to 2014 September, thus spanning from the decaying phase of the 23rd solar cycle to the maximum of the 24th cycle. We explored the intensity temporal variations as a function of drift shell and proton energy, also providing an explicit investigation of the solar modulation effects at different equatorial pitch angles. PAMELA observations offer new important constraints for the modeling of low-altitude particle radiation environment at the highest trapping energies.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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