000003576 001__ 3576
000003576 005__ 20180920143409.0
000003576 037__ $$aCTALK-2018-0064
000003576 100__ $$aKatsiyannis, Athanassios C.
000003576 245__ $$aThe detection of ultra-relativistic electrons in low Earth orbit by the LYRA instrument on board the PROBA2 satellite
000003576 260__ $$c2018
000003576 269__ $$c2018-11-09
000003576 520__ $$aWe present the analysis of energetic electrons, indirectly detected at an altitude of ~700 km by the Large Yield RAdiometer (LYRA) instrument on board ESA's Project for On-board Autonomy 2 (PROBA2) satellite in the form of microbursts of <10 ms, with a phenomenon duration of 100 s. 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. The observed events are strongly correlated to geo-magnetic activity and appear even during modest disturbances. Additionally, they are well confined geographically within the L=4-6 McIlwain zones, and they show a prominent dawn-dusk asymmetry. A combination of various magnetospheric mechanisms is proposed as a starting point towards a full quantitative explanation.
000003576 536__ $$a2STCE_PHYSSOL/$$c2STCE_PHYSSOL/$$f2STCE_PHYSSOL
000003576 594__ $$aSTCE
000003576 700__ $$aDominique, Marie
000003576 700__ $$aPierrard, Viviane
000003576 700__ $$aLopez Rosson, Graciela
000003576 773__ $$tEuropean Space Weather Week 15, Leuven
000003576 8560_ $$fthanassis.katsiyannis@observatoire.be
000003576 85642 $$ahttp://www.stce.be/esww15/
000003576 906__ $$aContributed
000003576 980__ $$aCTALKCONT