Diagnostics of the solar corona structure by the refraction effects on radio emission

Details Diagnostics of the solar corona structure by the refraction effects on radio emission Diagnostics of the solar corona structure by the refraction effects on radio emission

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996r%26qe...39..967b&link_type=abstract

Radiophysics and Quantum Electronics, Volume 39, Issue 11-12, pp. 967-970

Physics

Scientific paper

The solar disc radio brightness distribution observed at RATAN-600 can be interpreted as the angular directivity of the disk center emission at viewing angles Θ=arcsin(R/R0) over an angular range of R< 0.9R 0 at several wavelengths in the 2.0 32 cm region. These spectra can be treated as an emission enhancement due to refraction effects in free-free corona emission. The model simulations show good agreement with the observations and lead to estimation of the electron density Ne= 1·10 9 cm-3 and emission measure EM=6·10 26 cm-5 for the quiet Sun.

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