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Title: Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment
Authors: Cash, S. R.
Davies, J. A.
Kolesnikova, E.
Robinson, T. R.
Wright, D. M.
Yeoman, T. K.
Strangeway, R. J.
First Published: 1-Sep-2002
Presented at: 10th International EISCAT Workshop, TOKYO, JAPAN
Start Date: 23-Jul-2001
End Date: 27-Jul-2001
Publisher: European Geosciences Union (EGU), Copernicus Publications, Springer Verlag (Germany)
Citation: Annales Geophysicae (2002) 20: 1499–1507
Abstract: A quantitative analysis is presented of the FAST satellite electric field and particle flux data during an EISCAT heating experiment run on 8 October 1998. Radio frequency heating, modulated at 3 Hz, launched ULF waves from the ionosphere into the lower magnetosphere. The ULF waves were observed in FAST data and constituted the first satellite detection of artificially excited Alfvénic ULF waves. The downward electron flux data for this event contain the first observations of electrons undergoing acceleration within the Ionospheric Alfvén Resonator (IAR) due to parallel electric fields associated with an artificially stimulated Alfvén wave. The time history and spectral content of the observed down-ward electron fluxes is investigated by considering the effects of a localised parallel electric field. Furthermore, it is demonstrated that a power law electron energy distribution describes the time-variable observed fluxes better than a Maxwellian distribution.
DOI Link: 10.5194/angeo-20-1499-2002
ISSN: 0992-7689
eISSN: 1432-0576
Version: Publisher Version
Status: Peer-reviewed
Type: Conference Paper
Rights: © Author(s) 2002. This work is distributed under the Creative Commons Attribution 3.0 License.
Appears in Collections:Conference Papers & Presentations, Dept. of Physics and Astronomy

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