Special Reports

Small-Scale Jetlike Features in Penumbral Chromospheres

+ See all authors and affiliations

Science  07 Dec 2007:
Vol. 318, Issue 5856, pp. 1594-1597
DOI: 10.1126/science.1146046

You are currently viewing the abstract.

View Full Text


We observed fine-scale jetlike features, referred to as penumbral microjets, in chromospheres of sunspot penumbrae. The microjets were identified in image sequences of a sunspot taken through a Ca II H-line filter on the Solar Optical Telescope on board the Japanese solar physics satellite Hinode. The microjets' small width of 400 kilometers and short duration of less than 1 minute make them difficult to identify in existing observations. The microjets are possibly caused by magnetic reconnection in the complex magnetic configuration in penumbrae and have the potential to heat the corona above a sunspot.

View Full Text