Extended Data Fig. 8: Saturn’s m = − 2 mode spectrum including coupling across pseudomodes of different l. | Nature Astronomy

Extended Data Fig. 8: Saturn’s m = − 2 mode spectrum including coupling across pseudomodes of different l.

From: A diffuse core in Saturn revealed by ring seismology

Extended Data Fig. 8

Predicted semi-amplitude dτ of optical depth variations near outer Lindblad resonances of density waves in Saturn’s rings is plotted as a function of frequency Ωp and resonance radius in the ring plane. Colors indicate interior model likelihood with the same mapping as in Figs. 2-3. Red diamond symbols mark the frequencies and approximate amplitudes of spiral density waves observed at m = − 2 outer Lindblad resonances. From left to right these are the Maxwell ringlet wave20, W87.199, W84.6411, and W76.4410.

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