  We present Rosetta RPC case study from four events at various radial
distance, phase angle and local time from autumn 2015, just after perihelion of
comet 67P/Churyumov-Gerasimenko. Pulse like (high amplitude, up to minutes in
time) signatures are seen with several RPC instruments in the plasma density
(LAP, MIP), ion energy and flux (ICA) as well as magnetic field intensity
(MAG). Furthermore the cometocentric distance relative to the electron exobase
is seen to be a good organizing parameter for the measured plasma variations.
The closer Rosetta is to this boundary, the more pulses are measured. This is
consistent with the pulses being filaments of plasma originating from the
diamagnetic cavity boundary as predicted by simulations.
