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Response of the Total Electron Content of Terrestrial Ionosphere to GRB041227

机译:陆地电离层总电子含量对GRB041227的响应

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摘要

Observations indicated that solar coronal mass ejections (CMEs) are closely asociated with reconnection-favored new flux emergence. By means of numerial simulations, a physical model of the emerging flux trigger mechanism for CMEs is proposed and explained well the observational results. Based upon this model, leaving the gravity and heat conduction out of consideration, the theoretical results of 2.5 dimensional numerical simulations indicate that whether a CME can be triggered depends on both the amount and the location of an emerging flux, besides its polarity orientation. Furthermore, the eruption and non-eruption regimes are presented in parameter space. By use of 15 filament eruption events in 2002 and 2003 and 44 non-eruption events in 2002, the results of a statistical study on the properties of emerging flux including its polarity orientation, its location and the amount of flux show that not all the emerging flux can make a filament to lose equilibrium and trigger the onset of a CME, The statistic results basically support the theoretical results of numerical simulations. This research provides useful information for the space weather forecast.
机译:观测表明,太阳日冕物质抛射(CME)与重新连接有利的新通量的出现密切相关。通过数值模拟,提出了新兴的CMEs通量触发机制的物理模型,并很好地解释了观测结果。在此模型的基础上,不考虑重力和热传导,2.5维数值模拟的理论结果表明,是否可以触发CME,除了其极性方向外,还取决于涌现的磁通量和位置。此外,在参数空间中提供了喷发和非喷发机制。通过使用2002年和2003年的15次细丝喷发事件和2002年的44次非喷发事件,对新兴通量的特性(包括其极性方向,位置和通量)进行统计研究的结果表明,并非所有新兴通量会使细丝失去平衡并触发CME的发生。统计结果基本上支持数值模拟的理论结果。这项研究为太空天气预报提供了有用的信息。

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