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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Linear magnetic holes in a unipolar region of the heliosheath observed by Voyager 1
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Linear magnetic holes in a unipolar region of the heliosheath observed by Voyager 1

机译：线性磁单极的区域的小孔

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摘要

Voyager 1 (V1) observed a unipolar interval in the heliosheath from day of year (DOY) 146–204, 2006, in which the magnetic field B was directed toward the Sun nearly along the spiral field direction. The direction of B was nearly constant in this interval (the 1-σ fluctuations in the hour averages and 48-s averages of the azimuthal and elevation angles being ≈±8° and ≈±5°, respectively). The average magnetic field strength was relatively large, B ≈ 0.21 nT. The fluctuations in both the hour averages and 48-s averages of B were non-Gaussian, being skewed toward small values of B, primarily by the presence of numerous linear magnetic holes. The magnetic holes moved past V1 at a rate of the order of 2/day. The characteristics of nine magnetic holes were analyzed by fitting the magnetic field strength profiles to a Gaussian distribution. The radial extent of the magnetic holes was of the order of 650,000 km, which is ≈80 RL, where RL is the Larmor radius of the pickup protons in the heliosheath. Although the magnetic holes in the heliosheath are much larger than those at 1 AU, the size in units of RL is of the same order of magnitude in the two locations, suggesting a common physical nature.
机译：旅行者1号(V1)观察到一个单极的间隔日鞘从天(机灵)146 - 204年,2006年,磁场B是指向太阳几乎沿着螺旋磁场方向。B的方向几乎是恒定的时间间隔(小时1 -σ波动平均值和平均48-s的方位高度角被≈±8°≈±5°,分别)。强度相对较大,B≈0.21元。小时平均值和48-s波动平均B的非高斯,被扭曲向小B值,主要由众多的线性磁洞的存在。磁洞搬过去的速度V12 /天。分析了磁洞通过拟合高斯的磁场强度的概要文件分布。洞是650000公里,这是≈80 RL, RL的拉莫尔半径传感器中的质子日鞘。在日鞘是磁洞大得多比1 AU, RL的单位大小在两个位置,相同的数量级提出一种常见的物理性质。

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