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Fig. 10

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Number density contrast in the phase plane showing the two-armed phase spiral at different values of θϕ. The stars are in the angular momentum range of 1400–1500 kpc km s−1 and at a galactocentric distance of 7.5 kpc to 8 kpc. The phase spiral appears to rotate counter-clockwise with increasing phase angle. The data presented in this figure can also be seen as an animation online.

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