Optical spectropolarimetry of extreme H$\alpha$ line profiles in seven active galactic nuclei

J. Biedermann, F. Marin, D. Hutsemékers +1

Some active galactic nuclei (AGNs) are known to show extremely asymmetric broad Balmer lines, with their main peak redshifted or blueshifted by thousands of km s${}^{-1}$, severely c…