Fig. 5

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Total reflected flux, Iλ (top), polarized flux, PIλ (middle), and degree of polarization, P (bottom), as a function of the planetary phase angle, α, of a circumplanetary ring with different outer radii. For comparison, the flux of a planet without a ring is also shown. The fluxes are normalized to the total reflected flux of a ringless planet at a phase angle of 0° at a wavelength of 0.55 μm. See Sect. 4.2 for details.
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