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首页> 外文期刊>Chinese Journal of Astronomy and Astrophysics >The Filament Eruption of 1999 March 21 and Its Associated Coronal Dimmings and CME
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The Filament Eruption of 1999 March 21 and Its Associated Coronal Dimmings and CME

机译：1999年3月21日的长丝爆发及其伴随的冠状暗光和CME

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We report a filament eruption near the center of the solar disk on 1999 March 21, in multi-wavelength observations by the Yohkoh Soft X-Ray Telescope (SXT), the Extreme-ultraviolet Images Telescope (EIT) and the Michelson Doppler Imager (MDI) on the Solar and Heliospheric Observatory (SOHO). The eruption involved in the disappearance of an Ha filament can be clearly identified in EIT 195 A difference images. Two flare-like EUV ribbons and two obvious coronal dimming regions were formed. The two dimming regions had a similar appearance in lines formed in temperature range 6 x 10~4 K to several 10~6 K. They were located in regions of opposite magnetic polarities near the two ends of the eruptive filament. No significant X-ray or Ha flare was recorded associated with the eruption and no obvious photospheric magnetic activity was detected around the eruptive region, and particularly below the coronal dimming regions. The above surface activities were closely associated with a partial halo-type coronal mass ejection (CME) observed by the Large Angle and Spectrometric Coronagraphs (LASCO) on the SOHO. In terms of the magnetic flux rope model of CMEs, we explained these multiple observations as an integral process of large-scale rearrangement of coronal magnetic field initiated by the filament eruption, in which the dimming regions marked the evacuated feet of the flux rope.
机译：我们在1999年3月21日通过Yohkoh软X射线望远镜（SXT），极紫外图像望远镜（EIT）和迈克尔逊多普勒成像仪（MDI）在多波长观测中报告了太阳电池中心附近的细丝喷发）在太阳和日球天文台（SOHO）上。在EIT 195 A差异图像中可以清楚地识别出与Ha丝消失有关的喷发。形成了两个类似火炬的EUV色带和两个明显的日冕变暗区域。这两个调光区域在温度范围为6 x 10〜4 K到几个10〜6 K的直线中具有相似的外观。它们位于喷丝的两端附近具有相反磁极性的区域中。没有记录到与喷发有关的明显的X射线或Ha耀斑，并且在喷发区域附近，尤其是在日冕变暗区域附近未检测到明显的光球磁活动。上述表面活动与SOHO上的大角度和光谱日冕仪（LASCO）观测到的部分晕圈型日冕物质抛射（CME）密切相关。根据CME的磁通绳模型，我们将这些多重观察解释为由细丝喷发引发的冠状磁场大规模重排的整体过程，其中调光区域标记了磁通绳的抽空脚。

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