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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

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

Fig. 5

Superposed epoch analyses during HILDCAA events. From top to bottom, the panels show the superposed time series of E > 2.0 MeV (E2) electron fluxes (cm−2 s−1 sr−1), IMF Bz (nT), SYM-H (nT), and AE (nT) indices during HILDCAA events. The red and blue curves correspond to isolated HILDCAAs (H) and CIR storm-preceded HILDCAAs (SH), respectively. The zero epoch time (indicated by the vertical line) corresponds to the initiation time of the HILDCAA events. The time axis is in the unit of 1 day. The numbers in the brackets in the title indicate the total number of H- and SH-events for the superposed epoch analyses

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