The Orientation of the Local Interstellar Magnetic Field
The Orientation of the Local Interstellar Magnetic Field
复制标题
局部星际磁场的方向
DOI：
10.1126/science.1139480
复制
发表时间：
2007
期刊：
影响因子：
56.9
通讯作者：
T. Gombosi
中科院分区：
文献类型：
--
作者：
M. Opher;Edward C. Stone;V. Izmodenov;Y. Malama;D. Alexashov;Gábor Tóth;T. Gombosi
局部星际磁场的方向在日光层中引入了不对称性，影响日光层无线电发射的位置和来自太阳风终端激波的离子的流动方向。我们将无线电发射和高能粒子流的观测结果与覆盖在日球顶上的磁场的三维磁流体动力学计算机模拟相结合，表明局部星际场的平面与银河平面成60°至90°。这一发现表明，本地星际云中的磁场方向与被认为平行于银道面的大尺度星际磁场的方向不同。
The orientation of the local interstellar magnetic field introduces asymmetries in the heliosphere that affect the location of heliospheric radio emissions and the streaming direction of ions from the termination shock of the solar wind. We combined observations of radio emissions and energetic particle streaming with extensive three-dimensional magnetohydrodynamic computer simulations of magnetic field draping over the heliopause to show that the plane of the local interstellar field is ∼60° to 90° from the galactic plane. This finding suggests that the field orientation in the Local Interstellar Cloud differs from that of a larger-scale interstellar magnetic field thought to parallel the galactic plane.