  During periods of strong magnetic activity, cold dense plasma from the
plasmasphere typically forms a plume extending towards the dayside
magnetopause, eventually reaching it. In this work, we present a large-scale
two-dimensional fully kinetic Particle-In-Cell simulation of a reconnecting
magnetopause hit by a propagating plasmaspheric plume. The simulation is
designed so that it undergoes four distinct phases: initial unsteady state,
steady state prior to plume arrival at the magnetospause, plume interaction and
steady state once the plume is well engulfed in the reconnection site. We show
the evolution of the magnetopause's dynamics subjected to the modification of
the inflowing plasma. Our main result is that the change in the plasma
temperature (cold protons in the plume) have no effects on the magnetic
reconnection rate, which on average depends only on the inflowing magnetic
field and total ion density, before, during and after the impact.
