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一个新的太阳宇宙线的日—地传输模型
Alternative TitleA NEW MODEL FOR SOLAR2TERRESTRIAL PROPAGATIONOF SOLAR COSMIC RAYS
黄永年; 王志丹; 北京8701信箱
Department空间天气学国家重点实验室
Source Publication地球物理学报
2000
Volume43Issue:5Pages:581-588
ISSN0001-5733
Language中文
Keyword太阳宇宙线 日冕传输 日-地传输模型
Abstract提出了一个新的太阳宇宙线日-地传输的数学模型,它包括日冕粒子分布源和行星际传播方程.根据对太阳宇宙线耀班黑子群特征和耀班相的观测,提出了多极性黑子湮没的两阶段日冕传输过程的传输方法,得到了与观测特征一致的日冕粒子分布源.日冕传输的第一阶段,和太阳耀斑脉冲相的时间相当,加速粒子通过扩散很快均匀地分布在耀斑区,形成所谓民人播区.第二阶段,加速粒子向快传播区以外的日冕区扩散并向行星空间逃逸,形成所谓快传
Other AbstractA new solar-terrest rial propagation model is presented for solar cosmic rays ,which includes a coronal dist ribution source of flare particles and the propagation equation for solar cosmic rays in the interplanetary space. Based on observations of sunspot group charac-teristics of a solar cosmic ray flare and flare phases,a two-step coronal transport model is pro-posed for solar flare particles,which results from the annihilations of sunspots in a sunspot group with magnetic multi-polarities For the first step process,about as same period as impulsive phase,we obtain f rom the coronal transport model that the flaring region is filled uni-formly with accelerated particles,it leads to the formation of Fast Propagation Region(FPR).During the second step process, after the flash phase,accelerated particles diffuse f rom the FPR into solar corona outside of the FPR and escape towards the interplanetary space,which is called the Slower Propagation Process. The interplanetary propagation of solar cosmic rays is described by the equation for solar cosmic-ray propagation in an infinite,homogeneous and orthot ropic medium. The intensity-time profiles given by numerical calculations of the theory are compared with the observations for the event on 24 September 1997 from SOHO. The predicted results give a good fit to the data.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1451
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
黄永年,王志丹,北京8701信箱. 一个新的太阳宇宙线的日—地传输模型[J]. 地球物理学报,2000,43(5):581-588.
APA 黄永年,王志丹,&北京8701信箱.(2000).一个新的太阳宇宙线的日—地传输模型.地球物理学报,43(5),581-588.
MLA 黄永年,et al."一个新的太阳宇宙线的日—地传输模型".地球物理学报 43.5(2000):581-588.
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