Radial variation of type-III source parameters

Details Radial variation of type-III source parameters Radial variation of type-III source parameters

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..137..307r&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 137, Feb. 1992, p. 307-315. Research supported by Australian Research Council.

Physics

15

Electron Beams, Parameterization, Plasma Density, Plasma Temperature, Type 3 Bursts, Brightness Temperature, Decay Rates, Emissivity, Least Squares Method, Solar Wind

Scientific paper

The parameters of type-III sources have been observed to vary as powers of the distance of the source from the sun. The values of the observed exponents are reviewed, and theoretical relationships between them are discussed and extended. It is shown that 11 observed exponents can be derived from a four-element subset. A least-squares fit is carried out by varying these four exponents, and it is shown that the results are consistent with observation to within the observational uncertainties. Best-fit expressions are given for the plasma density and temperature, the solar wind speed, beam velocity and density, frequency drift rate, peak Langmuir fields, brightness temperature, volume emissivity, beam duration and burst decay time.

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