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arXiv 1406.4967astro-ph.SR
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Forbush降低与IP磁场增强之间的关系如何?

How are Forbush decreases related with IP magnetic field enhancements ?

Arunbabu K. P., P. Subramanian, Sunil Gupta, H. M. Antia

摘要:

宇宙线福布什减少(FD)通常被认为是由于来自太阳的地球定向日冕物质抛射(CME)及其相关的冲击。当日冕物质抛射及其冲击到达地球时,它们会引起磁场压缩。我们试图了解这些磁场压缩和FD之间的关系,在12和42 GV之间的刚性使用的数据从GRAPES-3仪器在Ooty。我们发现,福布什减少剖面的形状显示出惊人的相似性,在近地IP介质的磁场压缩。我们试图理解这一有趣结果的含义。

英文摘要:

Cosmic ray Forbush decreases (FDs) are usually thought to be due to Earth-directed coronal mass ejections (CMEs) from the Sun and their associated shocks. When CMEs and their shocks reach the Earth, they cause magnetic field compressions. We seek to understand the relation between these magnetic field compressions and FDs at rigidities between 12 and 42 GV using data from the GRAPES-3 instrument at Ooty. We find that the shapes of the Forbush decrease profiles show a startling similarity to that of the magnetic field compression in the near-Earth IP medium. We seek to understand the implications of this interesting result.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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