Inter-Active Region Connection of Sympathetic Flaring on 2000 February 17
Inter-Active Region Connection of Sympathetic Flaring on 2000 February 17
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DOI：
10.1086/322377
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发表时间：
2001-10
期刊：
影响因子：
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通讯作者：
Haimin Wang;Jongchul Chae, Vasyl Yurchyshyn;Guo Yang;M. Steinegger;P. Goode
中科院分区：
文献类型：
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作者：
Haimin Wang;Jongchul Chae, Vasyl Yurchyshyn;Guo Yang;M. Steinegger;P. Goode
我们分析了来自大熊太阳天文台的高分辨率Hα全盘数据，来自迈克尔逊多普勒成像仪、大角度和光谱日冕仪以及SOHO上的极紫外光成像望远镜的磁强计和极紫外光数据，以及2000年2月17日的Yohkoh软X射线数据。AR 8872爆发之后是一次极对称的日冕物质抛射(CME)。我们演示了环路激活，这似乎是AR 8869中第一次耀斑和AR 8872中第二次耀斑的结果。在AR 8869中的一次灯丝喷发和与之相关的耀斑之后，激活以浪涌的形式开始。这股涌动很快变成了一组扰动，以约80公里的速度向另一个活动区域AR 8872传播。在AR 8872号航道发生骚乱后不到一小时内，发生了第二次照明弹。在Hα和EUV195？图像中，运动扰动都出现在吸收中。扰动可能代表质量传递，它具有垂直于场线的显著速度分量，因此导致场线的输运。在这种情况下，扰动可以被认为是一种特殊的浪涌，我们可以称之为“席卷的闭环浪涌”。我们还展示了与CME相关的三个活跃区域的大面积变暗。这次变暗从AR 8869和AR 8872开始，并延伸到AR 8870，它位于太阳赤道的另一边。我们认为，相互作用区环的激活和大规模变暗都是与CME相关的大规模重组的标志。
We have analyzed high-resolution Hα full disk data from Big Bear Solar Observatory (BBSO); magnetograph and EUV data from the Michelson Doppler Imager, Large Angle and Spectrometric Coronagraph, and Extreme Ultraviolet Imaging Telescope on board SOHO; and Yohkoh soft X-ray data of 2000 February 17. Two sympathetic M-class solar flares erupted in succession in NOAA Active Region 8869 and 8872, respectively. The eruption from AR 8872 was followed by an extremely symmetric halo coronal mass ejection (CME). We demonstrate the loop activation, which appears to be the consequence of the first flare in AR 8869 and the cause of the second flare in AR 8872. The activation started in the form of a surge just after a filament eruption and its associated flare in AR 8869. The surge quickly turned into a set of disturbances that propagated at a speed of about 80 km s-1 toward the other active region AR 8872. The second flare followed in less than an hour after the arrival of the disturbances at AR 8872. The moving disturbances appeared in absorption in both Hα and EUV 195 Å images. The disturbances may represent mass transfer, which had a significant velocity component perpendicular to the field lines and, hence, caused the transport of field lines. In this case, the disturbances may be considered to be a special kind of surge, which we may call a "sweeping closed-loop surge." We also demonstrated large area dimmings associated with the CME in three active regions. The dimming started from AR 8869 and AR 8872 and was extended to AR 8870, which was on the opposite side of the solar equator. We believe that both the activation of inter-active region loops and the large-scale dimming are the signatures of large-scale restructuring associated with the CME.