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Two-Dimensional Velocity of the Magnetic Structure Observed on July 11, 2017 by the Magnetospheric Multiscale Spacecraft

机译:二维磁结构的速度2017年7月11日,观察磁性层的多尺度的宇宙飞船

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摘要

In order to determine particle velocities and electric field in the frame of the magnetic structure, one first needs to determine the velocity of the magnetic structure in the frame of the spacecraft observations. Here, we demonstrate two methods to determine a two-dimensional magnetic structure velocity for the magnetic reconnection event observed in the magnetotail by the Magnetospheric Multiscale (MMS) spacecraft on July 11, 2017, Spatio-Temporal Difference (STD) and the recently developed polynomial reconstruction method. Both of these methods use the magnetic field measurements; the reconstruction technique also uses the current density measured by the particle instrument. We find rough agreement between the results of our methods and with other velocity determinations previously published. We also explain a number of features of STD and show that the polynomial reconstruction technique is most likely to be valid within a distance of 2 spacecraft spacings from the centroid of the MMS spacecraft. Both of these methods are susceptible to contamination by magnetometer calibration errors.
机译:为了确定粒子速度和电场在磁场的框架结构,需要确定一分之一速度的磁结构框架宇宙飞船的观察。演示两种方法来确定二维磁结构的速度事件中观察到磁场重联磁尾的磁性层的多尺度(MMS)宇宙飞船于2017年7月11日,时空差异(STD)和最近开发多项式重建方法。这些方法使用的磁场测量;使用电流密度测量的粒子乐器。我们的方法和结果与其他速度决定之前出版。解释一些性病的特点和显示多项式重建技术是大多数在2的距离可能是有效的宇宙飞船的间距MMS的重心宇宙飞船。通过磁强计校准污染错误。

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