  We investigated the transverse charge densities in the nucleon in nuclear
matter within the framework of the in-medium modified Skyrme model. The medium
modification of the nucleon electromagnetic form factors are first discussed.
The results show that the form factors in nuclear matter fall off faster than
those in free space, as the momentum transfer increases. As a result, the
charge radii of the nucleon become larger, as the nuclear matter density
increases. The transverse charge densities in the nucleon indicate that the
size of the nucleon tends to bulge out in nuclear matter. This salient feature
of the swelling is more clearly observed in the neutron case. When the proton
is transversely polarized, the transverse charge densities exhibit the
distortion due to the effects of the magnetization.
