๐”– Bobbio Scriptorium
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Solar radio burst and in situ determination of interplanetary electron density

โœ Scribed by J. -L. Bougeret; J. H. King; R. Schwenn

Book ID
104651563
Publisher
Springer
Year
1984
Tongue
English
Weight
706 KB
Volume
90
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

We review and discuss a few interplanetary electron density scales which have been derived from the analysis of interplanetary solar radio bursts, and we compare them to a model derived from 1974-1980 Helios 1 and 2 in situ density observations made in the 0.3-1.0 AU range. The Helios densities were normalized to 1976 with the aid of IMP and ISEE data at 1 AU, and were then sorted into 0.1 AU bins and logarithmically averaged within each bin. The best fit to these 1976-normalized, bin averages is N(RAu ) = 6.1R-2.1o cm-3. This model is in rather good agreement with the solar burst determination if the radiation is assumed to be on the second harmonic of the plasma frequency. This analysis also suggests that the radio emissions tend to be produced in regions denser than the average where the density gradient decreases faster with distance than the observed R-2.1o.

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