Initial Results from the Cassini Solar Conjunction Faraday Rotation Experiment

Details Initial Results from the Cassini Solar Conjunction Faraday Rotation Experiment Initial Results from the Cassini Solar Conjunction Faraday Rotation Experiment

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh52a0449j&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SH52A-0449

Physics

7509 Corona, 7513 Coronal Mass Ejections, 7524 Magnetic Fields

Scientific paper

On June 21, 2002 Cassini was in solar conjunction with the line of sight passing just below the south pole of the sun within 1 solar radii of the solar surface. Since Cassini carries both coherent X-band (8GHz) and Ka-band (32GHz) transponders, this conjunction can provide Faraday rotation measurements of the line of sight magnetic field close to the sun. Measurements of the left and right circular polarizations were carried out at Goldstone, California over an 11-day period centered on conjunction. Using a model of the coronal electron density we calculate the spatially averaged magnetic field from the Faraday rotation data with special attention to times of transient behavior. SOHO observations show several CME's crossing the Earth-Cassini line of sight during this interval.

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