科学家在实验室模拟太阳磁场帕克螺旋

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bairuizheng 2019-07-31 00:09

太阳磁场会被太阳风吹散，并随太阳自转扭曲成一个螺旋结构，也被称为帕克螺旋。

dushunli 2019-07-31 00:15

科学硬的力量！

mang2004 2019-07-31 00:55

A laboratory model for the Parker spiral and magnetized stellar winds r6_a%A*  
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Many rotating stars have magnetic fields that interact with the winds they produce. The Sun is no exception. The interaction between the Sun’s magnetic field and the solar wind gives rise to the heliospheric magnetic field—a spiralling magnetic structure, known as the Parker spiral, which pervades the Solar System. This magnetic field is critical for governing plasma processes that source the solar wind. Here, we report the creation of a laboratory model of the Parker spiral system based on a rapidly rotating plasma magnetosphere and the measurement of its global structure and dynamic behaviour. This laboratory system exhibits regions where the plasma flows evolve in a similar manner to many magnetized stellar winds. We observe the advection of the magnetic field into an Archimedean spiral and the ejection of quasi-periodic plasma blobs into the stellar outflow, which mimics the observed plasmoids that fuel the slow solar wind. This process involves magnetic reconnection and can be modelled numerically by the inclusion of two-fluid effects in the simulation. The Parker spiral system mimicked in the laboratory can be used for studying solar wind dynamics in a complementary fashion to conventional space missions such as NASA’s Parker Solar Probe mission. \r9%;?f  

lufan 2019-07-31 01:06

帕克螺旋！！！！！！

tassy 2019-07-31 01:12

太阳自转扭曲成一个螺旋结构。

从业者007 2019-07-31 07:45

太阳磁场开始拉伸和旋转的区域被认为具有高动态特性，但却很少被研究。

wangjin001x 2019-07-31 07:46

科学家在实验室模拟太阳磁场帕克螺旋

蠊蠊 2019-07-31 07:49

。只要等离子体以足够快的速度自旋，它的磁场就会形成螺旋结构。研究人员随后再根据探针测量的磁结构和等离子体流数据，研究这个实验室恒星风的动力学机制

songyang1169 2019-07-31 08:10

根据发表在《Nature Physics》期刊上的一项研究，威斯康星大学麦迪逊分校的研究人员在实验室里创造出了太阳磁场帕克螺旋。这是一个太阳磁场和等离子体流螺旋结构的实验模型，该模型可被看作是对该理论及相关现象的一个替代研究方法，并将对 “帕克” 太阳探测器等太空任务进行补充。

谭健 2019-07-31 08:20

实验室模拟太阳磁场帕克螺旋