论文标题
CME发生率的时间和空间行为在不同的纬度
The Temporal and Spatial Behaviors of CME Occurrence Rate at Different Latitudes
论文作者
论文摘要
冠状质量弹出（CME）的统计研究是太阳能物理学的热门话题。为了进一步揭示CME在不同纬度和高度下的时间和空间行为，我们分析了CMES的发生率，冠状亮度指数（CBI）和10.7 cm太阳能无线电通量（F10.7）之间的相关性和相位关系。我们发现，在高纬度（> = 60）下，CME的发生率与CBI相对较强（<= 50）相对较强（> = 60）。在低纬度地区，CMES的发生率与CBI相对较弱的情况大于F10.7。在太阳周期24（SC24）期间，CME，F10.7和CBI之间的相关关系比太阳周期23（SC23）具有更强的相关关系。在SC23期间，高纬度CME发生率落后于F10.7，到三个月后，在SC24期间，低纬度CME的出现速率导致低纬度CBI降低了一个月。当从CDAW目录的样品中取出非常微弱的CMESARE时，相关系数值变大了。根据我们的结果，我们可以推测高/低纬度CME的源区域可能会有所不同，并且磁能积累和耗散的过程从太阳的下部到上层大气层。不同指标之间的时间偏移可以帮助我们更好地理解负责太阳能相互作用的物理过程。
The statistical study of the Coronal Mass Ejections (CMEs) is a hot topic in solar physics. To further reveal the temporal and spatial behaviors of the CMEs at different latitudes and heights, we analyzed the correlation and phase relationships between the occurrence rate of CMEs, the Coronal Brightness Index (CBI), and the 10.7-cm solar radio flux (F10.7). We found that the occurrence rate of the CMEs correlates with CBI relatively stronger at high latitudes (>=60) than at low latitudes (<=50). At low latitudes, the occurrence rate of the CMEs correlates relatively weaker with CBI than F10.7. There is a relatively stronger correlation relationship between CMEs, F10.7, and CBI during Solar Cycle 24(SC24) than Solar Cycle 23 (SC23). During SC23, the high-latitude CME occurrence rate lags behind F10.7 by three months, and during SC24, the low-latitude CME occurrence rate leads to the low-latitude CBI by one month. The correlation coefficient values turn out to be larger when the very faint CMEsare removed from the samples of the CDAW catalog. Based on our results, we may speculate that the source regions of the high/low-latitude CMEs may vary in height, and the process of magnetic energy accumulation and dissipation is from the lower to the upper atmosphere of the Sun. The temporal offsets between different indicators could help us better understand the physical processes responsible for the solar-terrestrial interactions.
