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arXiv 1002.0397astro-ph.SR
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X级耀斑期间半影暗条的相干横向运动

Coherent Lateral Motion of Penumbral Filaments during X-class Flare

S. Gosain, P. Venkatakrishnan, Sanjiv Kumar Tiwari

摘要:

现在,对Hinode航天器搭载的天基50厘米太阳光学望远镜拍摄的太阳光球层高分辨率照片进行了例行观测。2006年12月13日,日野号拍摄了NOAA 10930中的三角洲黑子,当时该活动区发生了X级耀斑。两个明亮的丝带可见,即使在白光和G-波段的图像除了色球Ca II H图像。我们使用互相关技术对太阳黑子进行了全球登记,并分析了耀斑间隔期间的局部效应。我们发现在耀斑期间,半影暗条有横向运动。此外,我们定位两个补丁,一个在任何极性,这表明收敛运动的极性反转线(PIL)。在钙II H图像中,我们发现内核与耀斑前的增亮,位于沿PIL。

英文摘要:

The high-resolution pictures of the solar photosphere from space based 50 cm Solar Optical Telescope (SOT) on-board Hinode spacecraft, are now routinely observed. Such images of a delta-sunspot in NOAA 10930 were obtained by Hinode during 13 December 2006 while a X-class flare occurred in this active region. Two bright ribbons were visible even in white light and G-band images apart from chromospheric Ca II H images. We register the sunspot globally using cross-correlation technique and analyse local effects during flare interval. We find that during flare the penumbral filaments show lateral motion. Also, we locate two patches, one in either polarity, which show converging motion towards the polarity inversion line (PIL). In Ca II H images we find kernel with pre-flare brightening which lie along the PIL.

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