The flow field in the sunspot canopy

摘要

Aims. We investigate the flow field in the sunspot canopy using simultaneous Stokes vector spectropolarimetry of three sunspots (theta = 27 degrees, 50 degrees, 75 degrees) and their surroundings in visible (630.15 and 630.25 nm) and near infrared (1564.8 and 1565.2 nm) neutral iron lines.