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
National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan.
Science. 2007 Dec 7;318(5856):1594-7. doi: 10.1126/science.1146046.
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.
我们在太阳黑子半影的色球层中观测到了精细尺度的类似喷流的特征，即半影微喷流。这些微喷流是在通过搭载于日本太阳物理卫星“日出”号上的太阳光学望远镜的Ca II H线滤光片拍摄的太阳黑子图像序列中识别出来的。微喷流宽度仅400公里且持续时间不到1分钟，这使得它们在现有观测中难以识别。微喷流可能是由半影中复杂磁结构中的磁重联引起的，并且有加热太阳黑子上方日冕的潜力。
