Orientation, location, and velocity of Saturn's bow shock: Initial results from the Cassini spacecraft
Orientation, location, and velocity of Saturn's bow shock: Initial results from the Cassini spacecraft
复制标题
土星弓激波的方向、位置和速度:卡西尼号航天器的初步结果
DOI:
10.1029/2005ja011297
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发表时间:
2006
期刊:
影响因子:
--
通讯作者:
Achilleos N
中科院分区:
文献类型:
--
作者:
Achilleos N
The Cassini spacecraft commenced its tour of the planet Saturn on 1 July 2004 (GMT). During the insertion orbit, the Cassini magnetometer (MAG), radio/plasma wave experiment (RPWS), and plasma spectrometer (CAPS) obtained in situ measurements of the magnetic field and plasma conditions associated with Saturn's environment. Analysis of the magnetic field data indicate that Cassini repeatedly crossed a mainly quasi‐perpendicular bow shock boundary on both the inbound (post‐dawn) and outbound (predawn) legs. Modeling of the bow shock and magnetopause crossing positions shows evidence for a magnetospheric compression during Cassini's immersion in the magnetosphere. The magnetic signatures of the bow shock crossings show the clearly defined “overshoot” and “foot” regions associated with the quasi‐perpendicular geometry. The duration of the shock foot, considered in combination with the RPWS and CAPS solar wind electron parameters upstream of the bow shock crossings, indicates that the length scale for the bow shock ramp at Saturn is about an ion inertial length. This is consistent with multispacecraft observations of the spatial scale of the Earth's shock foot region. The data are generally consistent with Saturn bow shock velocities up to ∼400 km s−1and shock structures governed by ion dynamics.
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影响因子:
5.2
作者:
J. Richardson;K. Paularena;A. Lazarus;J. Belcher
通讯作者:
J. Richardson;K. Paularena;A. Lazarus;J. Belcher
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
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作者:
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通讯作者:
C. Sonett
影响因子:
--
作者:
M. Gedalin
通讯作者:
M. Gedalin
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
M. Gedalin
通讯作者:
M. Gedalin