Including Flare Sympathy in a Model for Solar Flare Statistics
Including Flare Sympathy in a Model for Solar Flare Statistics
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DOI：
10.1007/s11207-006-0206-2
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发表时间：
2006-09
期刊：
影响因子：
2.8
通讯作者：
M. Wheatland;I. Craig
中科院分区：
文献类型：
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作者：
M. Wheatland;I. Craig
太阳耀斑的共鸣有多种观测证据，即一个活动区的耀斑是由另一个活动区的耀斑触发的。然而，太阳耀斑统计模型通常忽略同情，假设耀斑是作为独立事件发生的。在这篇文章中，我们认为统计耀斑模型对交感耀斑的影响应该是稳健的。进一步，我们调查了耀斑统计的一个特定模型，M.S.惠特兰和I.J.D.克雷格(占星术)的耀斑共鸣的后果。J.595,458,2003)模型。最初的处理描述了一组重新连接的结构(标记为隔板)，这些结构根据与磁流体动力学耀斑模型一致的简单规则独立地耀斑。通过允许在一个隔板上的耀斑在耀斑之后的一段时间内在所有其他隔板上增加耀斑的概率来修改该描述，增加与耀斑的能量成比例的量。仿真结果说明了模型从弱同情心到强同情心的转变。在弱共鸣的限制下，该模型再现了观测到的耀斑频率-能量和等待时间分布。
There is a variety of observational evidence for solar flare sympathy, i.e., the triggering of a flare in one active region by a flare in another region. Models for solar flare statistics, however, usually ignore sympathy by assuming that flares occur as independent events. In this paper, we argue that statistical flare models should be robust to the effects of sympathetic flaring. Further, we investigate the consequences of flare sympathy for a specific model of flare statistics, the M. S. Wheatland and I. J. D. Craig (Astrophys. J.595, 458, 2003) model. The original treatment describes an assembly of reconnecting structures (labelled separators) that flare independently according to simple rules consistent with magnetohydrodynamic flare models. This description is modified by allowing a flare at one separator to increase the probability of flaring at all other separators for a period of time following the flare, by an amount proportional to the energy of the flare. Simulations illustrate the transition of the model from weak to strong sympathy. In the limit of weak sympathy, the model reproduces observed flare frequency–energy and waiting-time distributions.