Robuta

https://www.aanda.org/articles/aa/ref/2016/08/aa28642-16/aa28642-16.html Anti-solar differential rotation on the active sub-giant HU Virginis, | Astronomy & Astrophysics... solar differential rotation https://www.aanda.org/articles/aa/ref/2002/34/aa2582/aa2582.html Solar differential rotation determined by tracing coronal bright points in SOHO-EIT images - II.... solar differential rotation