Analysis of the Properties of Solar Active Regions and the Solar Flares during 1996—2008ormalsize
-
摘要: 在1996—2008年期间, 可见日面共出现3067个活动区, 其中活动区 面积S满足10μh ≤S≤ 90μh (μh为太阳半球面积的 百万分之一)的活动区数量占活动区总数的58.52%, 100μh≤ S≤ 490μh的活动区数量占活动区总数的31.43%, 而S ≥500μh的 活动区数量仅约占活动区总数的6%, S≥1000μh的活动区数量仅约占 活动区总数的1%, 面积为0的活动区约占活动区总数的4%. 1996—2008年期间, 除面积低于50μh的活动区外, 不同面积活 动区的数量占该年活动区总数比例的最大值通常都在太阳活动峰年之后, 即 相对太阳黑子数平滑月均值都有一定的延迟. 在1997—2008年期间, 至少能够产生一个A级耀斑的活动区数量为1408个, 而在此期间, 共产生了 7706个C级耀斑、1141个M级耀斑和110个X级耀斑. C级耀斑在1~8Å 波段流量的积分值为22.711J·m-2, M级耀斑在1~8Å 波段流量的积分值为29.443J·m-2, X级耀斑在1~8Å 波段流量的积分值为36.178J·m-2. 第23太阳活动周期间, 南半 球的耀斑活动比北半球强.Abstract: The total number of solar Active Regions (AR) Nt that occurred during 1996—2008 is 3067. And 58.52% of the Nt are the AR with the area satisfying the condition 10μh ≤ S≤90μh, 31.43% of the Nt are the AR with the area satisfying the condition 100μh ≤ S≤490μh. The AR with area S≥500μh only accounted for about 6% and the ARs with area S≥1000μh only accounted for about 1% of the total AR. The AR with area being 0 accounted for 4.01%. For each year during 1996—2008, the ratio of AR with different area S to the total number of AR usually reached its maximum at the time several years after solar maximum except the AR with area S≤ 50μh. The number that can produce at least one solar X-ray flare during 1997—2008 is 1408. The total number of C-class flares is 7706, while the total number of M-class flare is 1141 and the total number of X-class flare is 110 during 1997—2008. The sum of time integral of X-ray flux in 1~8Å produced by all C-class, M-class and X-class flares are 22.711, 29.443 and 36.178 J·m-2. The Soft X-Ray (SXR) flare activities in the southern hemisphere are stronger that in the northern hemisphere during Solar Cycle 23.
-
Key words:
- Sunspot /
- Solar flare /
- Solar active regions
-
[1] LO Kejun, HONG Qinfang, GU Xiaoma, et al. Sunspots at high latitude and solar activity[J]. Acta Astron. Sin., 1999, 40:435-438 (李可军, 洪琴芳, 顾啸马,等. 日冕高纬黑子与太阳活动. 天文 学报, 1999, 40:435-438) [2] LI K J, GAO P X, ZHAN L S, et al. The Long-term behavior of the north-south[J]. Asym. Sunspot Act.: Solar Phys., 2009, 254:145-154 [3] LI K J, CHEN H D, ZHAN L S, et al. Asymmetry of solar activity in cycle 23[J]. J. Geophys. Res., 2009, 114, A04101 [4] VERMA V K. Relationship of great soft X-ray flares with other solar activity phenomena[J]. Astrophys. Space Sci., 2011, 334:83-102 [5] YANG Xingxing, LE Guiming, ZHANG Chengyi, et al. A statistical analysis of X1-, X2-class and above flares during solar cycles 21-23[J]. Acta Astron. Sin., 2013, 54(4):327-333 (杨星星, 乐贵明, 张成义, 等. 21~23周 X1和X2级以上耀斑的统计分析[J]. 天文学报, 2013, 54(4):327-333) [6] CHENG Libin, LE Guiming, LU Yangping, et al. The analysis of the properties of super solar proton events and the associated phenomena[J]. Acta Astron. Sin., 2014, 55(3):203-210 (程立斌, 乐贵明, 陆阳平, 等. 超强太阳质子事件及 相伴现象特征分析[J]. 天文学报, 2014, 55(3):203-210) [7] MENG Weijuan, LE Guiming, LIN Zhaoxiang, et al. Distribution of CMEs in different angular width and its relationship with the phase of sunspot numbers in solar cycle 23[J]. Chin. J. Space Sci., 2013, 33(3):225-230 (孟伟娟, 乐贵明, 林兆祥, 等. 第23周不同角宽CME的分布及与太阳黑子数位相的比较[J]. 空间科学 学报, 2013, 33(3):225-230) [8] LE G M, CAI Z, WANG H N, et al. Solar cycle distribution of great geomagnetic storms[J]. Astrophys. Space Sci., 2012, 339:151-156 [9] LE G M, CAI Z, WANG H N, et al. Solar cycle distribution of major geomagnetic storms[J]. Res. Astron. Astrophys., 2013, 13(6):739-748 [10] LE G M, YANG X X, LIU Y H, et al. Statistical properties of X-class solar flares and their relationship with super active regions during solar cycles 21-23[J]. Astrophys. Space Sci., 2014, 350:443-447 [11] LE G M, YANG X X, LIU D, et al. Solar cycle distribution of strong SPEs and the related solar-terrestrial phenomena[J]. Astrophys. Space Sci., 2014, 352:403-408 [12] JOSHI B, JOSHI A. The north-south asymmetry of soft X-ray flare index during solar cycles 21, 22 and 23[J]. Solar Phys., 2004, 219:343-356 [13] KUBO Y, AKIOKA M. Existence of thresholds in proton flares and application to solar energetic particle alerts[J]. Space Weather, 2004, 2, S01002 [14] CHEN A Q, WANG J X, LI J W, et al. Statistical properties of super active regions during solar cycles 19-23[J]. Astron. Astrophys., 2011, 534, A47
点击查看大图
计量
- 文章访问数: 1381
- HTML全文浏览量: 50
- PDF下载量: 884
- 被引次数: 0