Upstream waves at Mars: Phobos observations

Journal Article · Tue May 01 00:00:00 EDT 1990 · Geophysical Research Letters (American Geophysical Union); (USA)

DOI:https://doi.org/10.1029/GL017i006p00897· OSTI ID:6485963

Russell, C T; Luhmann, J G ^[1]; Schwingenschuh, K; Riedler, W ^[2]; Yeroshenko, Ye ^[3]

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1. Univ. of California, Los Angeles (USA)
2. Space Research Institute, Graz (Austria)
3. IZMIRAN, Moscow (USSR)

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. On 2 occasions this turbulence occurred upon crossing the Phobos orbit. Also weak, {minus}0.15 nT, 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.

• OSTI ID: 6485963
• Journal Information: Geophysical Research Letters (American Geophysical Union); (USA), Vol. 17:6; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MARS PLANET
SOLAR WIND
INTERACTIONS
HYDROMAGNETIC WAVES
MAGNETIC FIELDS
MAGNETOMETERS
POLARIZATION
PROTONS
SHOCK WAVES
SPACE VEHICLES
TURBULENCE
BARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
MEASURING INSTRUMENTS
NUCLEONS
PLANETS
SOLAR ACTIVITY
VEHICLES
640107* - Astrophysics & Cosmology- Planetary Phenomena