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Fig. 1.
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(a) Stroboscopic Poincaré section (r, pr) for f = 2κπ and rc = 7.0, Mb = 6.25 × 1010 M⊙, Ωb = 45 km s−1 kpc−1, and Ωsp = 15 km s−1 kpc−1. (b) The stable periodic orbit of the x1 family.
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