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Measurements of electron and positron fluxes below the geomagnetic cutoff by the PAMELA magnetic spectrometer
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2017 (English)In: Proceedings of Science, Sissa Medialab Srl , 2017Conference paper, Published paper (Refereed)
Abstract [en]

We present a measurements of electron and positron fluxes below the geomagnetic cutoff rigidity in wide energy range from 50 MeV to several GeVs by the PAMELA magnetic spectrometer. The instrument was launched on June 15th 2006 on-board the Resurs-DK satellite on low orbit with 70 degrees inclination and altitude between 350 and 600 km. Features of spatial distributions of secondary electrons and positrons in the near Earth space, including the South Atlantic Anomaly, were investigated in terms of lifetime and geographical origin. The separation in stably trapped, long lifetime quasi-trapped, and short lifetime albedo components was performed on base of back tracing procedure in geomagnetic field. A significant difference in relative abundance of positrons with respect to electrons is seen for the stable trapped and the quasi-trapped populations what pointing out on differences in trapping mechanism of those populations. 

Place, publisher, year, edition, pages
Sissa Medialab Srl , 2017.
Keywords [en]
Cosmic rays, Cosmology, Earth (planet), Geomagnetism, Magnetic resonance spectrometers, Orbits, Particle spectrometers, Positrons, Geographical origins, Geomagnetic fields, Magnetic spectrometers, Relative abundance, Secondary electrons, South atlantic anomalies, Trapping mechanisms, Wide energy range, Electrons
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-236843Scopus ID: 2-s2.0-85046061049OAI: oai:DiVA.org:kth-236843DiVA, id: diva2:1273607
Conference
35th International Cosmic Ray Conference, ICRC 2017, 10 July 2017 through 20 July 2017
Note

QC 20181221

Available from: 2018-12-21 Created: 2018-12-21 Last updated: 2018-12-21Bibliographically approved

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Carlson, PerPearce, Mark

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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • text
  • asciidoc
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