Fig. 6: Residuals of cometary polarisation measurements.
From: Unusual polarimetric properties for interstellar comet 2I/Borisov
Residuals of all comet polarisation measurements (cyan symbols) except those of comet Hale-Bopp fitted to Eq. (1), compared to our data of comet 2I/Borisov obtained at the largest phase angles (red symbols). Panel a refers to observations obtained in the RFfilter and panel b to the observations obtained in the IFfilter. The continuous and dashed curves correspond to statistical prediction bands for 90% and 95% confidence respectively. Errorbars are calculated as explained in Methods subsection Polarimetry.
