Polarization position angle standard stars: a reassessment of $\hat{I}¸$ and its variability for seventeen stars based on a decade of observations

Daniel V. Cotton, Jeremy Bailey, Lucyna Kedziora-Chudczer +14

Observations of polarization position angle ($\hat{I}¸$) standards made from 2014 to 2023 with the High Precision Polarimetric Instrument (HIPPI) and other HIPPI-class polarimeters in bo…