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ISBN 978-80-7378-024-1 © MATFYZPRESS High-latitude Bow Shock: Tilt Angle Effects

By K. Jelínek, Z. Němeček and J. ˇ Safránková


Abstract. This paper deals with an influence of the tilt angle on the location of the Earth’s bow shock. We present statistical study of more than five thousand bow shock crossings collected by five spacecraft (INTERBALL-1, MAGION-4, GEOTAIL, IMP 8 and CLUSTER) for which as a monitor of the solar wind we used data from the WIND satellite. We assume that the effect of the tilt angle (which is the angle between the Earth’s magnetic dipole and Z axis of GSM coordinates) on the bow shock position is significant only at high latitudes. For the study, we compare our set of crossings with an analytical bow shock model (Jeˇráb et al. [2005]). We found that the position of the high-latitude bow shock is also measurably governed by the Earth’s tilt angle

Year: 2011
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