Upward high-energy field-aligned electron beams above the polar edge of auroral oval: Observations from the SKA-3 instruments onboard the Auroral Probe (Interball-2)
| Autor: | V. A. Stepanov, B. A. Ilyin, A. K. Kuzmin, A. Y. Safronov, Yu. I. Galperin, B. I. Khazanov, I. I. Cherkashin, F. K. Shuiskaya, M. V. Iovlev, A. A. Klimashov, L. S. Gorn |
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| Přispěvatelé: | Space Research Institute of the Russian Academy of Sciences (IKI), Russian Academy of Sciences [Moscow] (RAS), Scientific Engineering Center (SNIIP), Raspletina str., EGU, Publication |
| Předmět: |
Atmospheric Science
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Magnetosphere Electron Acceleration Electric field Earth and Planetary Sciences (miscellaneous) lcsh:Science [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Physics Range (particle radiation) [SDU.OCEAN] Sciences of the Universe [physics]/Ocean Atmosphere lcsh:QC801-809 Geology Astronomy and Astrophysics Geophysics lcsh:QC1-999 Computational physics Particle acceleration lcsh:Geophysics. Cosmic physics Space and Planetary Science Physics::Space Physics [SDU.STU] Sciences of the Universe [physics]/Earth Sciences Physics::Accelerator Physics Polar lcsh:Q lcsh:Physics Beam (structure) |
| Zdroj: | Scopus-Elsevier Annales Geophysicae, Vol 16, Iss 9, Pp 1046-1055 (0000) Annales Geophysicae Annales Geophysicae, European Geosciences Union, 1998, 16 (9), pp.1046-1055 Annales Geophysicae, Vol 16, Pp 1046-1055 (1998) |
| ISSN: | 0992-7689 1432-0576 |
| Popis: | A new phenomenon was found at the polar edge of the auroral oval in the postmidnight-morning sectors: field-aligned (FA) high-energy upward electron beams in the energy range 20–40 keV at altitudes about 3RE, accompanied by bidirectional electron FA beams of keV energy. The beam intensity often reaches more than 0.5·103 electrons/s·sr·keV·cm2, and the beams are observed for a relatively long time (~3·102–103s), when the satellite at the apogee moves slowly in the ILAT-MLT frame. A qualitative scenario of the acceleration mechanism is proposed, according to which the satellite is within a region of bidirectional acceleration where a stochastic FA acceleration is accomplished by waves with fluctuating FA electric field components in both directions.Key words. Ionosphere (particle acceleration; wave-particle interactions) · Magnetospheric physics (magnetosphere-ionosphere interactions) |
| Databáze: | OpenAIRE |
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