Details

Autor(en) / Beteiligte

• Katsukawa, Y.
• Berger, T. E.
• Ichimoto, K.
• Lites, B. W.
• Nagata, S.
• Shimizu, T.
• Shine, R. A.
• Suematsu, Y.
• Tarbell, T. D.
• Title, A. M.
• Tsuneta, S.

Titel

Small-Scale Jetlike Features in Penumbral Chromospheres

Ist Teil von

• Science (American Association for the Advancement of Science), 2007-12, Vol.318 (5856), p.1594-1597

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

2007

Quelle

Science Online_科学在线

Beschreibungen/Notizen

• 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.