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Phase Relationships Between the CME-Energy Cycle,the Sunspot-Area Cycle and the Flare-Index Cycle |
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| Authors: | P X Gao J L Xie J Zhong |
| Institution: | 1. National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming, 650011, China 2. Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China 3. Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210008, China 4. Graduate University of Chinese Academy of Sciences, Beijing, 100049, China 5. Kunming No. 3 Middle School, Kunming, 650011, China |
| Abstract: | We study the phase relationships between the coronal-mass-ejection (CME) energy cycle, the sunspot-area cycle, and the flare-index cycle from 1996 to 2010. The results show the following: i) The activity cycle of the flare index significantly leads the activity cycle of the sunspot area. ii) The activity cycle of the CME energy is inferred to be almost in phase with the activity cycle of the sunspot area; the activity cycle of the CME energy at low latitudes slightly leads the activity cycle of the sunspot area; the CME energy at high latitudes is shown to significantly lag behind the sunspot area. iii) The CME energy is shown to significantly lag behind the flare index; the CME energy at low latitudes is shown to slightly lag behind the flare index; the CME energy at high latitudes is shown to significantly lag behind the flare index. |
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