Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment
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...
Published in: | Annales Geophysicae |
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Language: | English |
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European Geosciences Union (EGU), Copernicus Publications, Springer Verlag (Germany)
2016
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Online Access: | http://www.ann-geophys.net/20/1499/2002/ http://hdl.handle.net/2381/38979 https://doi.org/10.5194/angeo-20-1499-2002 |
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ftleicester:oai:lra.le.ac.uk:2381/38979 2023-05-15T16:04:23+02:00 Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment Cash, S. R. Davies, J. A. Kolesnikova, E. Robinson, T. R. Wright, D. M. Yeoman, T. K. Strangeway, R. J. 2016-12-16T10:04:41Z http://www.ann-geophys.net/20/1499/2002/ http://hdl.handle.net/2381/38979 https://doi.org/10.5194/angeo-20-1499-2002 en eng European Geosciences Union (EGU), Copernicus Publications, Springer Verlag (Germany) Annales Geophysicae (2002) 20: 1499–1507 0992-7689 http://www.ann-geophys.net/20/1499/2002/ http://hdl.handle.net/2381/38979 doi:10.5194/angeo-20-1499-2002 1432-0576 © Author(s) 2002. This work is distributed under the Creative Commons Attribution 3.0 License. CC-BY Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology ionosphere active experiments particle acceleration magnetospheric physics electric fields IONOSPHERIC HEATER WAVES RADAR Conference Paper 2016 ftleicester https://doi.org/10.5194/angeo-20-1499-2002 2019-03-22T20:21:26Z 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. Peer-reviewed Publisher Version 10th International EISCAT Workshop, TOKYO, JAPAN Conference Object EISCAT University of Leicester: Leicester Research Archive (LRA) Annales Geophysicae 20 9 1499 1507 |
institution |
Open Polar |
collection |
University of Leicester: Leicester Research Archive (LRA) |
op_collection_id |
ftleicester |
language |
English |
topic |
Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology ionosphere active experiments particle acceleration magnetospheric physics electric fields IONOSPHERIC HEATER WAVES RADAR |
spellingShingle |
Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology ionosphere active experiments particle acceleration magnetospheric physics electric fields IONOSPHERIC HEATER WAVES RADAR Cash, S. R. Davies, J. A. Kolesnikova, E. Robinson, T. R. Wright, D. M. Yeoman, T. K. Strangeway, R. J. Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment |
topic_facet |
Science & Technology Physical Sciences Astronomy & Astrophysics Geosciences Multidisciplinary Meteorology & Atmospheric Sciences Geology ionosphere active experiments particle acceleration magnetospheric physics electric fields IONOSPHERIC HEATER WAVES RADAR |
description |
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. Peer-reviewed Publisher Version 10th International EISCAT Workshop, TOKYO, JAPAN |
format |
Conference Object |
author |
Cash, S. R. Davies, J. A. Kolesnikova, E. Robinson, T. R. Wright, D. M. Yeoman, T. K. Strangeway, R. J. |
author_facet |
Cash, S. R. Davies, J. A. Kolesnikova, E. Robinson, T. R. Wright, D. M. Yeoman, T. K. Strangeway, R. J. |
author_sort |
Cash, S. R. |
title |
Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment |
title_short |
Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment |
title_full |
Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment |
title_fullStr |
Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment |
title_full_unstemmed |
Electron acceleration observed by the FAST satellite within the IAR during a 3 Hz modulated EISCAT heater experiment |
title_sort |
electron acceleration observed by the fast satellite within the iar during a 3 hz modulated eiscat heater experiment |
publisher |
European Geosciences Union (EGU), Copernicus Publications, Springer Verlag (Germany) |
publishDate |
2016 |
url |
http://www.ann-geophys.net/20/1499/2002/ http://hdl.handle.net/2381/38979 https://doi.org/10.5194/angeo-20-1499-2002 |
genre |
EISCAT |
genre_facet |
EISCAT |
op_relation |
Annales Geophysicae (2002) 20: 1499–1507 0992-7689 http://www.ann-geophys.net/20/1499/2002/ http://hdl.handle.net/2381/38979 doi:10.5194/angeo-20-1499-2002 1432-0576 |
op_rights |
© Author(s) 2002. This work is distributed under the Creative Commons Attribution 3.0 License. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/angeo-20-1499-2002 |
container_title |
Annales Geophysicae |
container_volume |
20 |
container_issue |
9 |
container_start_page |
1499 |
op_container_end_page |
1507 |
_version_ |
1766400023819452416 |