검색결과

검색조건
좁혀보기
검색필터
결과 내 재검색

간행물

    분야

      발행연도

      -

        검색결과 4

        4.
        2020.02 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        The recent study of Chae et al. (2017) found a one-to-one correspondence between plasma blobs out owing along a ray formed after a coronal mass ejection (CME) and small X-ray ares. In the present work, we have examined the spatial con guration and the eruption process of the ares that are associated with the blobs by analyzing EUV images and magnetograms taken by the SDO/AIA and HMI. We found that the main are and the successive small ares took place in a quadrupolar magnetic con guration characterized by predominant magnetic elds of positive polarity, two minor magnetic fragments of negative polarity, and a curved polarity inversion line between them, which suggests that the formation process of the blobs may be similar to that of the parent CME. We also found that the successive ares resulted in a gradual change of the quadrupolar magnetic con guration, and the relevant migration of aring kernels. The three-dimensional geometry and the property of the current sheet, that is often supposed to be embedded in an observed post-CME ray, seem to keep changing because of mutual feedback between the successive ares and the temporal change of the magnetic eld con guration. Our results suggest that the observed post-CME rays may not re ect the characteristics of the current sheet responsible for the impulsive phase of the are.
        4,000원