ESA Science & Technology - Simultaneous THEMIS-CARISMA observations of EMIC Pc1 waves

(a) Spectrogram (top) and time series (bottom) of the Y-component (geographic east-west) of magnetic field at Gillam (CARISMA station); (b) Spectral density (top) and waveform (bottom) of the perpendicular (azimuthal) magnetic field component in field-aligned coordinates recorded by THEMIS-D. Over-plotted are the spin-plane spacecraft potential (red line), the local (black line) and the equatorial (white line) helium gyrofrequency.

This result was presented at the First Joint Cluster-THEMIS workshop, held 23-26 September 2008 at the University of New Hampshire, Durham, USA.