THEMIS observations of the spatial extent and pressure‐pulse excitation of field line resonances | Zendy

Sarris T. E. | Zendy; Liu W. | Zendy; Li X. | Zendy; Kabin K. | Zendy; Talaat E. R. | Zendy; Rankin R. | Zendy; Angelopoulos V. | Zendy; Bonnell J. | Zendy; Glassmeier K.H. | Zendy

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THEMIS observations of the spatial extent and pressure‐pulse excitation of field line resonances

Author(s) -

Sarris T. E.,

Liu W.,

Li X.,

Kabin K.,

Talaat E. R.,

Rankin R.,

Angelopoulos V.,

Bonnell J.,

Glassmeier K.H.

Publication year - 2010

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2010gl044125

Subject(s) - magnetosphere , physics , amplitude , field line , electric field , magnetic field , excitation , field (mathematics) , line (geometry) , equator , computational physics , excited state , geophysics , optics , atomic physics , astronomy , mathematics , geometry , quantum mechanics , pure mathematics , latitude

We present a case study of Field Line Resonances (FLRs) in the dayside magnetosphere, observed in both electric and magnetic field components at multiple L ‐shells near the equator. The event measured by the five THEMIS probes and the nearby GOES and Geotail satellites provides a unique opportunity to differentiate between temporal and spatial characteristics of FLRs. Narrow‐band FLRs were excited globally at different frequencies matching the local field line resonant frequency. In conjunction with a sharp increase in the upstream solar wind density, prompt intensification of the FLR power was observed at different L ‐shells, simultaneously at different frequencies and amplitudes.

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