Discontinuities in the magnetic field near Enceladus
Discontinuities in the magnetic field near Enceladus
复制标题
土卫二附近磁场的不连续性
DOI:
10.1002/2014gl060081
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发表时间:
2014
影响因子:
5.2
通讯作者:
M. K. Dougherty
中科院分区:
文献类型:
--
作者:
J. Saur;S. C. Treeck;H. Kriegel;M. K. Dougherty
The plasma interaction of Saturn's icy moon Enceladus generates a hemisphere coupling current system that directly connects the giant planet's northern and southern polar magnetosphere. Based on Cassini magnetometer observations from all 20 targeted Enceladus flybys between 2004 and 2014, we study the magnetic field discontinuities associated with these hemisphere coupling currents. We identify a total number of 11 events during which the magnetic field was discontinuous at the surface of the Enceladus flux tube (defined by the bundle of magnetic field lines tangential to the solid body of the moon). A minimum variance analysis is applied to calculate the surface normals of these discontinuities. In agreement with theoretical expectations, the normals are found to be perpendicular to the surface of the Enceladus flux tube. The variation of the hemisphere coupling currents with Enceladean longitude leaves a clear imprint in the strengths of the observed magnetic field jumps as well.
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影响因子:
--
作者:
Kriegel;S. Simon;U. Motschmann;J. Saur;F. M. Neubauer;A. M. Persoon;M. K. Dougherty;D. A. Gurnett
通讯作者:
D. A. Gurnett
影响因子:
--
作者:
Kriegel;Neubauer;Motschmann;Dougherty
通讯作者:
Dougherty
影响因子:
2.4
作者:
H. Kriegel;S. Simon;J. Müller;U. Motschmann;J. Saur;K. Glassmeier;M. Dougherty
通讯作者:
M. Dougherty
影响因子:
--
作者:
T. Hill;M. Thomsen;Robert L. Tokar;A. Coates;G. Lewis;D. Young;F. Crary;R. Baragiola;Robert E. Johnson;Y. Dong;R. Wilson;G. Jones;J. Wahlund;D. Mitchell;M. Horányi
通讯作者:
M. Horányi
影响因子:
5.2
作者:
Jones, G. H.;Arridge, C. S.;Magee, B. A.
通讯作者:
Magee, B. A.