Fig. 3
From: Wave–particle interaction effects in the Van Allen belts
Collection of data from several instruments on board the RBSP-B spacecraft on 19 September 2012. The upper panel shows an energy-time spectrogram (color-coded) for the entire day, while the second panel shows the level of spacecraft charging inferred for the same period. Panels 3, 4, and 5 show various wave modes identified from the RBSP sensors (as described in the text). The lower panel shows the spacecraft geocentric radial distance as a function of time