Estimating the bow shock normal speed from single spacecraft observations of magnetic wave activity

Details Estimating the bow shock normal speed from single spacecraft observations of magnetic wave activity Estimating the bow shock normal speed from single spacecraft observations of magnetic wave activity

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21.2055l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 18, p. 2055-2058

Other

2

Bow Waves, Magnetic Fields, Rankine-Hugoniot Relation, Shock Waves, Solar Planetary Interactions, Magnetometers, Propagation Velocity, Shock Wave Propagation

Scientific paper

We introduce a reliable method for estimating the speed of the quasi-perpendicular bow shock from single spacecraft data. It is based on timing the passage of the foot and uses magnetic wave activity to detect the upstream boundary of the foot. The frequency range employed is between 20 and 60 Hz as recorded by the Active Magnetospheric Particle Tracer Explorer - Isothermal Remanent Magnetization (AMPTE-IRM) fluxgate magnetometer. This new technique has been applied to 33 bow shock crossings. The resulting velocities are checked against results from the dual-spacecraft method and others employed in the past.

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