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Fig. 1 | Earth, Planets and Space

Fig. 1

From: Relativistic electron acceleration during HILDCAA events: are precursor CIR magnetic storms important?

Fig. 1

Solar wind/interplanetary dependence and geomagnetic/radiation belt effects during a HILDCAA event on 6–10 June 2006. From top to bottom, the panels show the frequency (Hz)-time (UT) spectrogram of the magnetic field component of the electromagnetic plasma waves (nT2 Hz−1) measured by the Cluster 1 spacecraft, the variations of E > 0.6 (E1), E > 2.0 (E2), and E > 4.0 MeV (E3) electron fluxes (cm−2 s−1 sr−1) from GOES-12, and solar wind speed (V sw in km s−1), IMF magnitude (Bo in nT), and Bz (nT) component in GSM coordinate system, and the SYM-H (nT) and AE (nT) indices, respectively. Perigee passes of Cluster 1 through the duskside magnetosphere are marked by black rectangles in the upper panel (close-up views are shown in Fig. 2). The horizontal arrow in the AE panel indicates the HILDCAA interval. The vertical dash-dot line shows the initiation time of the HILDCAA

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