Figure 19

Migration test: central density evolution at different resolutions. Magnification of the central rest-mass density evolution around the first contraction of the migrating star. The low-resolution data (thin curves) corresponds to Figure 18 and to a grid spacing of \(0.2~M_{\odot}\). The high-resolution data (thick curves) corresponds to a grid spacing of \(0.086~M_{\odot}\). The high-frequency modes present in the EL5 data at low resolution persist at high resolution in both schemes.