Direct comparison of Viking 2.3-GHz signal phase fluctuation and columnar electron density between 2 and 160 solar radii

Details Direct comparison of Viking 2.3-GHz signal phase fluctuation and columnar electron density between 2 and 160 solar radii Direct comparison of Viking 2.3-GHz signal phase fluctuation and columnar electron density between 2 and 160 solar radii

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982tdar.nasa..117b&link_type=abstract

In its The Telecommun. and Data Acquisition Progr. J. p 117-128 (SEE N83-14323 05-32)

Astronomy and Astrophysics

Astrophysics

Comparison, Deep Space Network, Electron Density (Concentration), Radio Signals, Solar Wind, Telecommunication, Astrophysics, Signal Analysis, Spacecraft Communication, Viking Spacecraft

Scientific paper

The relationship between solar wind induced signal phase fluctuation and solar wind columnar electron density has been the subject of intensive analysis during the last two decades. In this article, a sizeable volume of 2.3-GHz signal phase fluctuation and columnar electron density measurements separately and concurrently inferred from Viking spacecraft signals are compared as a function of solar geometry. These data demonstrate that signal phase fluctuation and columnar electron density are proportional over a very wide span of solar elongation angle. A radially dependent electron density model which provides a good fit to the columnar electron density measurements and, when appropriately scaled, to the signal phase fluctuation measurements, is given. This model is also in good agreement with K-coronameter observations at 2 solar radii (2r0), with pulsar time delay measurements at 10r0, and with spacecraft in situ electron density measurements at 1 AU.

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