Waves in the proton cyclotron frequency range in the CME observed by wind on August 7-8,1996: Theory and data

As first discussed by Farrugia et al. (J. Geophys. Res., 103, 6543, 1998), coronal mass ejections (CMEs) may support the excitation of electromagnetic ion cyclotron waves (EICWs). The proton plasma beta, and the electron temperature and anisotropy in the front region (~5 hours, translating to ~6×106...

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Autores principales: Dasso, S., Farrugia, C.J., Gratton, F.T., Lepping, R.P., Ogilvie, K.W., Fitzenreiter, R.J.
Formato: JOUR
Materias:
Anisotropy
Space research
Spacecraft
Wind
Electron temperature
Electromagnetic waves
magnetosphere
plasma
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02731177_v28_n5_p747_Dasso
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02731177_v28_n5_p747_Dasso
record_format dspace
spelling todo:paper_02731177_v28_n5_p747_Dasso2023-10-03T15:15:30Z Waves in the proton cyclotron frequency range in the CME observed by wind on August 7-8,1996: Theory and data Dasso, S. Farrugia, C.J. Gratton, F.T. Lepping, R.P. Ogilvie, K.W. Fitzenreiter, R.J. Anisotropy Space research Spacecraft Wind Electron temperature Electromagnetic waves magnetosphere plasma As first discussed by Farrugia et al. (J. Geophys. Res., 103, 6543, 1998), coronal mass ejections (CMEs) may support the excitation of electromagnetic ion cyclotron waves (EICWs). The proton plasma beta, and the electron temperature and anisotropy in the front region (~5 hours, translating to ~6×106 km) of the CME observed by WIND on August 7-8, 1996 favor this possible excitation. Supplementing these measured parameters by other data taken from a survey of CME properties observed by the ISEE 3 spacecraft (Gosling et al., J. Geophys. Res., 92, 8519, 1987), we solve the EICW dispersion relation numerically. We find short e-folding times of EICWs, of the order of 5 min, i.e., much less than the typical evolution time of these ejecta. We suggest that high resolution data will show enhanced power in the 0.5 Hz range. © 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved. Fil:Dasso, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gratton, F.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02731177_v28_n5_p747_Dasso
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Anisotropy
Space research
Spacecraft
Wind
Electron temperature
Electromagnetic waves
magnetosphere
plasma
spellingShingle Anisotropy
Space research
Spacecraft
Wind
Electron temperature
Electromagnetic waves
magnetosphere
plasma
Dasso, S.
Farrugia, C.J.
Gratton, F.T.
Lepping, R.P.
Ogilvie, K.W.
Fitzenreiter, R.J.
Waves in the proton cyclotron frequency range in the CME observed by wind on August 7-8,1996: Theory and data
topic_facet Anisotropy
Space research
Spacecraft
Wind
Electron temperature
Electromagnetic waves
magnetosphere
plasma
description As first discussed by Farrugia et al. (J. Geophys. Res., 103, 6543, 1998), coronal mass ejections (CMEs) may support the excitation of electromagnetic ion cyclotron waves (EICWs). The proton plasma beta, and the electron temperature and anisotropy in the front region (~5 hours, translating to ~6×106 km) of the CME observed by WIND on August 7-8, 1996 favor this possible excitation. Supplementing these measured parameters by other data taken from a survey of CME properties observed by the ISEE 3 spacecraft (Gosling et al., J. Geophys. Res., 92, 8519, 1987), we solve the EICW dispersion relation numerically. We find short e-folding times of EICWs, of the order of 5 min, i.e., much less than the typical evolution time of these ejecta. We suggest that high resolution data will show enhanced power in the 0.5 Hz range. © 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved.
format JOUR
author Dasso, S.
Farrugia, C.J.
Gratton, F.T.
Lepping, R.P.
Ogilvie, K.W.
Fitzenreiter, R.J.
author_facet Dasso, S.
Farrugia, C.J.
Gratton, F.T.
Lepping, R.P.
Ogilvie, K.W.
Fitzenreiter, R.J.
author_sort Dasso, S.
title Waves in the proton cyclotron frequency range in the CME observed by wind on August 7-8,1996: Theory and data
title_short Waves in the proton cyclotron frequency range in the CME observed by wind on August 7-8,1996: Theory and data
title_full Waves in the proton cyclotron frequency range in the CME observed by wind on August 7-8,1996: Theory and data
title_fullStr Waves in the proton cyclotron frequency range in the CME observed by wind on August 7-8,1996: Theory and data
title_full_unstemmed Waves in the proton cyclotron frequency range in the CME observed by wind on August 7-8,1996: Theory and data
title_sort waves in the proton cyclotron frequency range in the cme observed by wind on august 7-8,1996: theory and data
url http://hdl.handle.net/20.500.12110/paper_02731177_v28_n5_p747_Dasso
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