Upstream waves at Mars - PHOBOS observations

Details Upstream waves at Mars - PHOBOS observations Upstream waves at Mars - PHOBOS observations

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17..897r&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 17, May 1990, p. 897-900.

Physics

54

Magnetohydrodynamic Waves, Mars Probes, Phobos, Solar Planetary Interactions, Bow Waves, Elliptical Polarization, Magnetohydrodynamic Turbulence, Mars Atmosphere, Planetary Magnetic Fields, Shock Waves, Mars, Waves, Upstream, Spacecraft Observations, Phobos 2 Mission, Ions, Magnetohydrodynamics, Magma Instrument, Turbulence, Magnetic Fields, Bow Shock, Polarization, Polarity, Diagrams, Pickup, Protons, Origin, Formation

Scientific paper

The region upstream from the Mars subsolar bow shock is surveyed for the presence of MHD wave phenomena using the high temporal resolution data from the Magma magnetometer. Strong turbulence is observed when the magnetic field is connected to the Mars bow shock in such a way as to allow diffuse ions to reach the spacecraft. Also weak waves are observed at the proton gyro frequency. These waves are left-hand elliptically polarized and may be associated with the pick-up of protons from the Mars hydrogen exosphere.

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