Space weather effects on the bow shock, the magnetic barrier, and the ion composition boundary at Venus
作者： D. Vech , K. Szego , A. Opitz , P. Kajdic , M. Fraenz
DOI: 10.1002/2014JA020782
关键词: Physics 、 Magnetosphere 、 Solar wind 、 Venus 、 Mercury's magnetic field 、 Astrophysics 、 Shock wave 、 Magnetosheath 、 Coronal mass ejection 、 Bow shocks in astrophysics 、 Geophysics
摘要: We present a statistical study on the interaction between interplanetary coronal mass ejections (ICMEs) and induced magnetosphere of Venus when peak magnetic field barrier was anomalously large (>65 nT). Based entire available Express data set from April 2006 to October 2014, we selected 42 events analyzed solar wind parameters, position bow shock, size plasma properties barrier, ion composition boundary (ICB). It found that investigated ICMEs can be characterized with shocks unusually tangential fields respect Venus-Sun line. In most cases shock not affected by ICME. few clouds observed. During these small magnetosonic Mach numbers inside caused appear at distances planet. The positions upper lower boundaries were ICMEs. ICB nightside closer planet during ICME passages which is attributed increased dynamic pressure.
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