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Fig. 4.

image

Diagram of orbital period – spin period for sdB+NS binaries. Different colors represent different initial donor masses. Binary radio pulsars in the Galactic disk from the ATNF Pulsar Catalogue (Manchester et al. 2005) are shown in the figure for comparison, where triangles (in the upper panel) show those with a He WD companion, and squares show those of CO companions.

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