Figure 38: Mass of the crust for the FPS EoS [274]. The neutron star mass is . Notice
the presence of the pasta layer, which are absent for the SLy EoS. The pasta phases occupy a thin
density layer, but contain about 48% of the crust mass. Left panel: fractional mass of the crust shell,
, vs. its bottom density . Right panel: proper depth below the star surface, z vs. mass
density .
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