An Attemps to Find the Source Extension of EM Waves with the Four Cluster Satellites

Details An Attemps to Find the Source Extension of EM Waves with the Four Cluster Satellites An Attemps to Find the Source Extension of EM Waves with the Four Cluster Satellites

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm22a0825p&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM22A-0825

Other

2487 Wave Propagation (6934), 2772 Plasma Waves And Instabilities

Scientific paper

One of the objectives of the CLUSTER mission is to detect the extension of various electromagnetic wave sources using the 4 satellites. This paper describes the methods we utilize to achieve this objective, using data recorded aboard CLUSTER by the STAFF spectrum analyser. This instrument provides the cross spectral matrix of three magnetic and two electric field components. This spectral matrix is processed by a dedicated software (PRASSADCO) in order to determine the wave normal directions relatively to the Earth's magnetic field. This calculation is done for the 4 satellites at different times and different frequencies according to the event we are looking at. All these wave normal directions are the input to a ray tracing program used to trace back to the source. Prime parameters from other CLUSTER experiments are obtained from the Cluster Science Data System: FGM (local magnetic field), WHISPER (local electron density), and auxiliary data. Considering the 4 satellite results, a minimum ray separation criterium is used to stop the calculation. Plots of the outputs are displayed in 3D. First results of this multi-satellite data processing will be shown.

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