标题： 超级活动区 NOAA 10484 的主要爆发活动 显示英文标题

标题： Major Surge Activity of Super-Active Region NOAA 10484

摘要： 我们观测到太阳活动区 NOAA 10484 发出的两次氢阿尔法辐射爆发。第一次爆发与一个 SF/C4.3级耀斑有关联，而第二次则是与 SF/C3.9级耀斑相关的重大爆发。这次爆发在 SOHO/EIT 的 195 埃波段以及 NoRh 的 17 GHz 波段上也被观测到，并且在这几个波段显示出相似的演化过程。主要爆发呈现出抛射喷流结构，在最大阶段其线性尺寸（约 1.2 × 10^5 公里）和角度大小（约 65 度）快速扩张。爆发物质运动沿着开放磁场线进行，平均速度约为 100 公里/秒。爆发的去扭曲运动揭示了剪切和扭曲磁通量的松弛现象。SOHO/MDI 磁图显示这些爆发发生在正极磁通浮现、汇聚并抵消周围反极性磁场的伴生黑子区域。我们的观测支持关于爆发和喷流的磁重联模型。 显示英文摘要

摘要： We observed two surges in H-alpha from the super-active region NOAA 10484. The first surge was associated with an SF/C4.3 class flare. The second one was a major surge associated with a SF/C3.9 flare. This surge was also observed with SOHO/EIT in 195 angstrom and NoRh in 17 GHz, and showed similar evolution in these wavelengths. The major surge had an ejective funnel-shaped spray structure with fast expansion in linear (about 1.2 x 10^5 km) and angular (about 65 deg) size during its maximum phase. The mass motion of the surge was along open magnetic field lines, with average velocity about 100 km/s. The de-twisting motion of the surge reveals relaxation of sheared and twisted magnetic flux. The SOHO/MDI magnetograms reveal that the surges occurred at the site of companion sunspots where positive flux emerged, converged, and canceled against surrounding field of opposite polarity. Our observations support magnetic reconnection models for the surges and jets.