Opher M, Stone E C, Gombosi T I
Department of Physics and Astronomy, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA.
Science. 2007 May 11;316(5826):875-8. doi: 10.1126/science.1139480.
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 approximately 60 degrees to 90 degrees 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.
本地星际磁场的方向在日球层中引入了不对称性，这些不对称性会影响日球层无线电发射的位置以及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关于磁场在日球层顶上空垂悬的广泛三维磁流体动力学计算机模拟相结合，以表明本地星际磁场平面与银道面大约呈60度至90度夹角。这一发现表明，本地星际云中的磁场方向与被认为与银道面平行的更大尺度星际磁场的方向不同。
