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The detection of ultra-relativistic electrons in low Earth orbit

dc.contributor.authorKatsiyannis, A.C.
dc.contributor.authorDominique, M.
dc.contributor.authorPierrard, V.
dc.contributor.authorLopez Rosson, G.
dc.contributor.authorDe Keyser, J.
dc.contributor.authorBerghmans, D.
dc.contributor.authorKruglanski, M.
dc.contributor.authorDammasch, I.E.
dc.contributor.authorDe Donder, E.
dc.date2018
dc.date.accessioned2018-01-15T13:04:57Z
dc.date.available2018-01-15T13:04:57Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/6399
dc.descriptionAims. To better understand the radiation environment in low Earth orbit (LEO), the analysis of in-situ observations of a variety of particles, at different atmospheric heights, and in a wide range of energies, is needed. Methods. We present an analysis of energetic particles, indirectly detected by the large yield radiometer (LYRA) instrument on board ESA's project for on-board autonomy 2 (PROBA2) satellite as background signal. Combining energetic particle telescope (EPT) observations with LYRA data for an overlapping period of time, we identified these particles as electrons with an energy range of 2 to 8 MeV. Results. The observed events are strongly correlated to geo-magnetic activity and appear even during modest disturbances. They are also well confined geographically within the L = 4–6 McIlwain zone, which makes it possible to identify their source. Conclusions. Although highly energetic particles are commonly perturbing data acquisition of space instruments, we show in this work that ultra-relativistic electrons with energies in the range of 2–8 MeV are detected only at high latitudes, while not present in the South Atlantic Anomaly region.
dc.languageeng
dc.titleThe detection of ultra-relativistic electrons in low Earth orbit
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeionosphere
dc.subject.freeultra-relativistic electrons
dc.subject.freelow Earth orbit
dc.subject.freegeostatic orbit
dc.subject.freeLYRA
dc.subject.freePROBA2
dc.subject.freeVLF
dc.subject.freeELF waves
dc.subject.freeECH waves
dc.subject.freeEMIC waves
dc.subject.freemicrobursts
dc.subject.freemonoenergetic electrons
dc.source.titleJournal of Space Weather and Space Climate
dc.source.volume8
dc.source.pageA01
Orfeo.peerreviewedYes
dc.identifier.doi10.1051/swsc/2017041


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