Location of the magnetodisk in the nightside outer magnetosphere of Saturn near equinox based on ion densities

Location of the magnetodisk in the nightside outer magnetosphere of Saturn near equinox based on ion densities
复制标题

基于离子密度的土星夜侧外磁层磁盘在春分点附近的位置

DOI:
--
复制
发表时间:
2012
期刊:
影响因子:
--
通讯作者:
D. Delapp
D. Delapp
中科院分区:
--
文献类型:
--
作者:
K. Szego;Z. Németh;G. Erdős;L. Foldy;Z. Bebesi;M. Thomsen;D. Delapp

文献摘要

参考文献

被引文献

相似文献

[1]我们调查离子密度来自卡西尼等离子体光谱仪的测量,以确定这些离子是如何分布在土星的磁盘周围。磁盘是一个可变的等离子体结构,这里我们拟合Arridge等人(2011)的简单结构模型作为参考的磁盘的中心线的位置。这项研究涵盖的时间范围DOY 092-285,2009年,围绕土星春分,沿着九个轨道的卡西尼号航天器,其中每一个包括一个土卫六飞越。我们还研究了在这段时间内的磁场分量的协方差。我们的主要发现是:a)Arridge等人(2011)的简单结构模型与热离子密度观测结果吻合良好,并且在土星的春分季节工作良好。B)在该数据集中,磁盘中央片的位置通过BR符号的变化来识别。在这些位置,我们观察到更高的重离子密度和更窄的限制赤道比质子。重离子层和质子层显示出与主要使命期间发现的相同的结构。c)观测到的磁片相对于航天器的摆动幅度很高,达到5 RS。d)赤道区和叶区(>5 RS)磁场分量的相对相位不同。
[1] We investigate ion densities derived from measurements by the Cassini Plasma Spectrometer, to determine how these ions are distributed around the magnetodisk of Saturn. The magnetodisk is a variable plasma structure, here we fitted the simple structural model of Arridge et al. (2011) as a reference for the location of the central line of the magnetodisk. This study covers the time range DOY 092–285, 2009, around Saturnian equinox, along nine orbits of the Cassini spacecraft, each of which included a Titan flyby. We also investigated the covariance of the magnetic field components during that period of time. Our main findings are: a) The simple structural model of Arridge et al. (2011) agrees well with the thermal ion density observations and works well in the equinox season of Saturn. b) In this data set the locations of the central sheet of the magnetodisk is identified by the change of sign of BR. At those locations we observed higher heavy ion densities and narrower confinement to the equator than those of protons. The heavy ion and proton layers exhibited the same structure that was found during the primary mission. c) The observed flapping amplitudes of the magnetosheet relative to the spacecraft were high, reaching 5 RS. d) The relative phase of the magnetic field components were different in the equatorial regions and in the lobes (>5 RS).
DOI: 10.1029/2007ja012963
发表时间: 2008-08
影响因子: --
作者:
C. Arridge;K. Khurana;C. Russell;D. Southwood;N. Achilleos;M. Dougherty;A. Coates;H. Leinweber
通讯作者: C. Arridge;K. Khurana;C. Russell;D. Southwood;N. Achilleos;M. Dougherty;A. Coates;H. Leinweber
土星磁盘中的力平衡模型
DOI: 10.1111/j.1365-2966.2009.15865.x
发表时间: 2010
影响因子: 4.8
作者:
Achilleos N
通讯作者: Achilleos N
DOI: 10.1029/2007ja012937
发表时间: 2008
期刊: Space Physics
影响因子: --
作者:
Andrews D
通讯作者: Andrews D
DOI: 10.1029/2010ja015666
发表时间: 2010
期刊: Space Physics
影响因子: --
作者:
Andrews D
通讯作者: Andrews D