Auroral kilometric radiation from transpolar arcs

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/92JA00410· OSTI ID:7012650

Pederson, B M ^[1]; Pottelette, R ^[2]; Eliasson, L ^[3]; Murphree, J S; Elphinstone, R D ^[4]; Bahnsen, A; Jespersen, M ^[5]

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1. Observatoire de Paris, Meudon (France)
2. Centre de Recherches en Physique de l'Environment, Saint-Maur-des-Fosses (France)
3. Swedish Institute of Space Physics, Kiruna (Sweden)
4. Univ. of Calgary, Alberta (Canada)
5. Danish Space Research Institute, Lyngby (Denmark)

Observations from the Swedish satellite Viking allow the authors to study the relationship between auroral kilometric radiation (AKR) and discrete auroral features. Previous work has shown that AKR generation is most often associated with nightside aurora. They present wave data which show that under certain circumstances the source regions may also occur on discrete features, identified as transpolar arcs. The wave spectrograms detected during crossings or closest approaches to such sources exhibit structures similar to those observed during nightside AKR source crossings. Also, the associated ion beams and trapped conical electron populations with enhanced upward directed loss cones peak at comparable energies ({approximately}1 keV).

• OSTI ID: 7012650
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 97:A7; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

661320* -- Auroral
Ionospheric
& Magnetospheric Phenomena-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
AURORAE
BEAMS
DETECTION
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
ION BEAMS
LEPTONS
LOSS CONE
MORPHOLOGY
ORIGIN
RADIATIONS
RADIOWAVE RADIATION
SATELLITES
TRAPPED ELECTRONS