  Recent high resolution spectropolarimetric observations from Hinode detected
the presence of supersonic downflows in a sunspot light bridge (Louis et al.
2009). These downflows occurred in localized patches, close to regions where
the field azimuth changed by a large value. This apparent discontinuity in the
field azimuth was seen along a thin ridge running along the western edge of the
light bridge. Some, but not all, of these downflowing patches were co-spatial
with chromospheric brightness enhancements seen in Ca II H filtergrams. The
presence of magnetic inhomogeneities at scales of 0.3 arcsec could facilitate
the reconnection of field lines in the lower chromosphere whose signatures
might be the supersonic downflows and the brightness enhancements that have
been observed.
