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Studies of Solar Magnetic Activity by
Jingxiu Wang
National Astronomical Observatories In this presentation, we first give a brief introduction of current status of the solar activity studies in China — the research groups and personals, the instrumentation and research work, and the future projects. In the second part of the presentation, we concentrate on some of the recent efforts made by our research group on understanding the source region and the initiation of coronal mass ejections (CMEs). Focus is placed on two basic questions: 1) are there large-scale magnetic structures, which are intrinsic components of solar magnetism and the carrying bodies of CMEs; 2) what role is played by the ubiquitous magnetic reconnection in the lower atmosphere, manifested as the observed flux cancellation in the photosphere, in the initiation of CMEs. Rather than giving answers, we try to identify the issues themselves and to define our future working directions.
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