Towards understanding the frequency distribution of solar flares-part 1: a Stochastic-Diffusive model of solar flares
文献类型：期刊论文
| 作者 | Du, Z. L. |
| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 359期号:1 |
| 关键词 | Sun: activity Sun: flares Solar corona Sun: X-rays, gamma rays Methods: analytical Turbulence |
| 英文摘要 | Systematic relationships of the subclass-averaged rise, decay times and durations of flare events as a function of the logarithmic peak flux (ln f) are investigated, employing the soft X-ray flares observed by GOES during the period from September 1975 to October 2014. Different behaviors are found before and after 1997. Since 1997 they all vary linearly with ln f, obeying the RV model. However, prior to 1997 they vary quadratically with ln f, implying a different energy storage/release process of flaring. The discrepancy may be related to the variation in the turbulence in the corona caused by the weakening magnetic field strength in the recent two decades. This motivates us to propose a Stochastic-Diffusive model for explaining the above result, by assuming that the temporal rate of flare energy resulted by external forces is proportional to the total energy already stored in the flare system and inversely proportional to the size scale of diffusion. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000360840500004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5588]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Z. L.. Towards understanding the frequency distribution of solar flares-part 1: a Stochastic-Diffusive model of solar flares[J]. ASTROPHYSICS AND SPACE SCIENCE,2015,359(1). |
| APA | Du, Z. L..(2015).Towards understanding the frequency distribution of solar flares-part 1: a Stochastic-Diffusive model of solar flares.ASTROPHYSICS AND SPACE SCIENCE,359(1). |
| MLA | Du, Z. L.."Towards understanding the frequency distribution of solar flares-part 1: a Stochastic-Diffusive model of solar flares".ASTROPHYSICS AND SPACE SCIENCE 359.1(2015). |
入库方式： OAI收割
来源：国家天文台
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