Fig. 9

Top panels: gravitational mass (in solar masses) versus circumferential radius of rotating neutron stars (rotation frequency 716 Hz) for the EoSs BSk19-20-21 (dots) and their analytical representations from Eq. (8) (solid lines). The middle and bottom panels show respectively a zoom around the maximum neutron-star mass and the low mass region where the discrepancies are the largest.
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