1997-2003年太阳质子事件源区的卡林顿经度分布  

THE CARRINGTON LONGITUDE DISTRIBUTION OF SOLAR PROTON EVENT SOURCE LOCATIONSDURING 1997-2003

作　　者：乐贵明[1] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100080

出　　处：《空间科学学报》2004年第2期81-88,共8页Chinese Journal of Space Science

基　　金：国家863项目资助(228144)

摘　　要：分析了1997-2003年期间的59个太阳质子事件,太阳质子事件源区的卡林顿经度带.分析结果表明,质子事件源区主要集中在10°-45°,135°-155°,180°-215°,230°-260°,265°-310°,345°-360°,还有4个质子耀斑分散在72°,74°,93°和107°上.其中最强的活动卡林顿经度带的经度范围是265°-310°,次之为卡林顿经度带135°-155°,最弱的是卡林顿经度带180°-215°最强的活动经度是卡林顿经度272°.1997-2003年期间峰值通量大于100 pfu,质子耀斑南半球发生次数为18,北半球发生次数为10;同一活动经度上的质子事件具有重现的规律,重复出现的时间间隔短的为27天,长的超过4年.There are 78 solar proton events produced in the period from 1997 to 2003. 19 of the total 78 solar proton events haven't definite source location. In this paper, the Carrington longitude distribution of source location for 59 solar proton events with definite location on the solar surface during 1997-2003 is studied. The results show that the source locations of solar proton events are mainly concentrated in four Carrington longitude bands, namely 10°-453, 135°-155°, 1803-215°, 230°-260°, 265°-310°, 345°-360°. The strongest Carrington longitude band of solar proton event is 265°-310° with 17 solar proton events occurring in the band. The strongest Carrington longitude is 272° with 7 solar proton events occurring on this Carrington longitude. The peak flux for three solar events of the seven solar proton events are over 10000pfu. The known active region 9077 and active region 10486 are located at the Carrington longitude 309° and 283°, respectively. The second strongest Carrington longitude band ranges from 135° to 155°. The Carrington longitude bands 10°-45° and 345°-360° are two moderate strong Carrington longitude bands. There are 28 solar proton events with peak flux over 100 pfu in total during the period from 1997 to 2003. Ten of them occurred in the north hemisphere of the Sun, eighteen of them produced in the southern hemisphere of the Sun. The solar proton events have recurrent law for the same active longitude, the recurrent time gap ranges from several days, 27-day to more than 4-year. Also we find that the solar proton events occurred in two hemispheres by turn for the same active longitude. Because the law of recurrent of the solar proton events not only in time but also in physics is still not very clearly, so that the short term and medium-term prediction of solar proton event are still waited for being solved.

关 键 词：1997年至2003年 太阳质子事件 卡林顿经度 质子耀斑 数据分析 

分 类 号：P182[天文地球—天文学]