Fig. 1
A) Observation geometry for polarimetric observations of comets. B) Polarimetric images of comets C/1995 O1 (Hale-Bopp) (left), 81P/Wild 2 (middle), and 22P/Kopff (right) obtained at small phase angles. The frame size is equal to 38 000 km, 9000 km, and 4400 km, respectively. C) Synthetic phase dependence of the degree of linear polarization in the circumnucleus halo.
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