Physics
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsm33b..06j&link_type=abstract
American Geophysical Union, Spring Meeting 2007, abstract #SM33B-06
Physics
2139 Interplanetary Shocks, 2154 Planetary Bow Shocks, 2728 Magnetosheath, 2752 Mhd Waves And Instabilities (2149, 6050, 7836), 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
The bow shock is created in front of an obstacle immersed into a supersonic flow and its location depends on the size and shape of the obstacle. It was found that the obstacle (magnetopause) is scaled with the solar wind dynamic pressure and changes its dimensions and location with dipole tilt angle and interplanetary magnetic field (IMF) orientation. The similar functional dependences would be used for prediction of the bow shock position. Many bow shock models have been developed for various conditions in course of years; however, none of these models consider the parametrization of bow shock properties with the tilt angle. The present study employs a set of about 3000 bow shock crossings registered during 1994-2002 by the different spacecraft (INTERBALL-1, IMP-8, GEOTAIL, MAGION-4, and CLUSTER-2) and presents an investigation of the tilt angle influence on the bow shock location. The study is based on a comparison of recent bow shock models with experimental data and with global MHD models.
Jelínek Karel
Nemecek Zdenek
Safrankova Jana
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