  The proton - charged pion correlated emission is studied in the reactions Au
(1.06 AGeV) + Au, Ni (1.06 and 1.93 AGeV) + Ni and Ni (1.97 AGeV) + Cu within
the BUU approach. The associated invariant mass distributions are shifted to
smaller energies with respect to the free $\Delta(1232)$ mass distribution due
to kinematical reasons. We find that the existing and partly conflicting
experimental data do not allow to draw definite conclusions on the in-medium
modification of the $\Delta(1232)$.
