北京师范大学学报（自然科学版）2016，Vol.52Issue(5)：542-549,8.DOI:10.16360/j.cnki.jbnuns.2016.05.002
基于三维区域标记对太阳活动区低色球层亮点的统计分析∗
Distribution of low-chromospheric brightpoints in a solar active region as observed by region-labeling
摘要
Abstract
Frequency distribution of solar energy in the low-chromosphere was investigated in the present work,mechanisms for heating solar corona was probed.Time series ofλ3968.5 filtergrams acquired by the Hinode observatory was used,a delaying active region was observed and a sample of 2.09×104 bright points (BP)was analyzed.A feature recognition algorithm based on 3-dimensional region-labeling was developed for the identification of BP.Frequency distribution of BP size,area,and light flux virtually was found to observe the power-law.Frequency of BP lifetime is piecewise.The middle section conforms to power-law while the high end is exponential.Distribution of large BP waiting time is exponential.The signal-to-noise ratio of BP production is inversely proportional to BP size.Small-size BP could be a stable source of energy for heating corona.Small-size BP density is lower than expected by power-law,probably due to decreased sampling rate in the time series.关键词
太阳色球/耀斑/微耀斑/区域标记法/自组织临界/幂律分布/泊松过程Key words
solar chromosphere/solar flare/solar microflare/region labelling/self-organized criticality/power-law distribution/Poisson process分类
天文与地球科学引用本文复制引用
李小波,杨志良,张洪起..基于三维区域标记对太阳活动区低色球层亮点的统计分析∗[J].北京师范大学学报（自然科学版）,2016,52(5):542-549,8.基金项目
国家自然科学基金资助项目(U1231104,11533009,10921303,11221063,41174153) （U1231104,11533009,10921303,11221063,41174153）
中国科学院太阳活动重点实验室基金资助项目(201512) （201512）
