Sunspot light bridges
Error
Sunspot light bridge
GREGOR
Unsharp-masked image of the largest sunspot of the trailing polarity of NOAA 11765 observed with the GREGOR Broadband Imager on 9 June 2013 at 09:22 UT at 486 nm. The spot was located 26 degrees away from the disk center.
Two prominent light bridges can be seen - the bright structures that split the sunspot umbra in three parts. Each light bridge has a central dark lane and "branches" that are perpendicular to it. These branches are the result of magneto-convective processes. Light bridges have the shape of a prism with the central dark lane located at its upper ridge.
Image credit: Rolf Schlichenmaier (KIS)
Publication: Schlichenmaier et al., 2016, Astronomy & Astrophysics, 596, A7