On June 06, 1996 POLAR was at the high latitude polar cap moving towards the nightside plasma sheet. While still in the polar cap/magnetotail lobe CEPPAD observed a transient signature of energetic particles. The signature was observed at 0600-0700 UT, and at 1000-1100 UT. The EFI instrument exhibited large changes in the spacecraft potential (Pot12) that were correlated with large electric fields (+-30 mV/m). Although these changes were common thoughout the interval presented, the most significant changes were seen at around 0600 UT.
Figure 1 shows the CEPPAD data for the event (dayplot).
Figure2.gif shows the EFI data for the event (0500-1300).
Figure2.ps shows the same data in postscript format.
Figure3.gif shows an expaned version of the EFI data for the event in the plasma sheet boundary layer + plasma sheet proper (1500-1720). Please not that after 1720 UT a spurious oscillation due to the high plasma density starts that does not allow good measurements in the spin plane. We can still use the on-axis booms for Ey_gse measurements if necessary, provided we do not go into shadow (I have not checked for that).
Figure3.ps shows the same data in postscript format.
Figure4.gif shows an expaned version of the EFI data for the event.
Figure3.ps shows the same data in postscript format.
