Rotation Profiles of Coronal Bright Points Inside and Outside of Coronal Holes

The rotation of the solar corona is not a fully resolved issue. Coronal holes (CHs) reveal sometimes more rigid, but in other cases more differential rotation profiles. We used two datasets of coronal bright points (CBPs), one within CHs, and one outside of CHs. We analyzed rotation profiles in the two datasets of CBPs and compared them to check if there is any difference between rotation profiles for CBPs within CHs and those outside of CHs. The reported rigidity of the CHs rotational profiles implies that Reynolds stresses, which are considered to be the main drivers of the solar differential profile, should also be different between the two datasets. Therefore, we analyzed the horizontal Reynolds stress for the two datasets as well. We also compared the meridional motion of the two datasets. In all cases the results between the two datasets were the same within the observational error. In both datasets the solar rotation profile is significantly differential and similar to the photospheric profile.