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首页> 外文会议>Proceedings of the 32nd International Cosmic Ray Conference >Study of intensity fluctuations in cosmic rays during Forbush Forbush-decreases
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Study of intensity fluctuations in cosmic rays during Forbush Forbush-decreases

机译：布什在下降期间宇宙射线强度波动的研究

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A fast decreases of GCR intensity during one one-two days and then it's gradually recovery in 5 –7 days are called the Forbush decreases (Fds). They are formed after the outstanding flares on the Sun and intensive solar co coron- nal mass ejecta. These phenomena appear ran al randomly in time, sporadically without any regularity, increasing its fr domly fre- equency in maxima of the solar activity. The strong shocks propagating in the interplanetary medium sweep out ene quency ener- rgetic cosmic rays and this effect is known as Forbush decrease of the cos getic cosmic ray intensity. Studying the cosmic ray mic spectrum during the times of Forbush decreases would provide a tool for probing large scale interplanetary irregular irregulari- ities. The present study dealt with the relationship between Interplanetary Coronal Mass Ejection ties. Ejections (ICMEs) and the s count rate decrease detected by the muon detectoreutron monitor. The emphasis is given on the analysis of the solar event, studying data from the Interplanetary medium to identify the interplanetary structure responsible for the i in- ntense tense geomagnetic storm occurred during these period, where the Dst index peaked to its highest negative values. U Us- sing the muon count rate observed by Muon Detectors, we will be able to observe, in the future, the direction in which ing a given ICME moves and we wi will be able to calculate the angle, which they reach the Earth. The decreases observed ll in the count rates during magnetic storms may occur due to intense magnetic field of magnetic cloud like structure within the ICMEs, or within the turbulent magnetic fiel field between shock and the magnetic field known as sheath field. d The interplanetary disturbances associated with Forbush decreases appear to merge and contribute to the long long-term solar solar-cycle modulation of cosmic cosmic-ray intensity.
机译：GCR强度在一到两天内快速下降，然后在5到7天内逐渐恢复，称为Forbush下降（Fds）。它们是在太阳上强烈的耀斑和强烈的太阳冠状物质抛射之后形成的。这些现象在时间上随机出现，偶尔没有任何规律性，增加了其太阳活动最大值的频率。在行星际介质中传播的强烈冲击清除了能量频率的宇宙射线，这种效应被称为Forbush降低了宇宙射线强度。研究Forbush减少时期的宇宙射线光谱将为探测大规模行星际不规则不规则性提供工具。本研究涉及行星际冠状物质抛射关系之间的关系。由μ子检测器/中子监测器检测到的射血（ICME）和计数率降低。重点放在太阳事件的分析上，研究来自行星际介质的数据，以确定在这段时期内发生强烈的强烈地磁风暴的行星际结构，其中Dst指数达到最高负值。使用Muon Detector观测到的μon计数率，将来我们将能够观察到给定ICME的运动方向，并且我们将能够计算出它们到达地球的角度。在磁暴期间观察到的计数率ll的下降可能是由于ICME内，或激波与被称为鞘层磁场之间的湍流磁场中的磁云状结构的强磁场所致。 d与Forbush减少相关的行星际扰动似乎合并并有助于对宇宙射线强度的长期长期太阳太阳周期调制。

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