Do white dwarfs produce stellar wind? If not, why is that? I've been told white dwarfs don't produce stellar wind like the sun produces solar winds. I don't quite understand why that is and can't really find any evidence that confirms or denies that. 

My understanding is that solar wind is the product of the sun's variable magnetic field and consists of charged particles. Does nuclear fusion have to be occurring at the star's core for these charged particles to exist?
The strong gravity of the white dwarf star makes it difficult for stellar wind to escape. Unglaub (2008) shows that for surface gravity $\log g &gt; 7.0$ hydrogen-helium winds are not possible for solar or sub-solar metallicity white dwarfs and only a weak metallic wind would be possible (note that in astronomy, "metal" tends to refer to any element heavier than helium). There is a group of hot white dwarfs with temperatures above 60000&nbsp;K called "hot wind white dwarfs" showing ultra-high excitation absorption lines. According to Reindl et al. (2019), these features arise from wind material trapped in the magnetosphere of the white dwarfs.