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:
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
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
[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).
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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
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