Scattering of radiowaves from cosmic sources in the solar corona

✍ Scribed by L. L. Baselyan; V. G. Sinitsin

• Publisher: Springer
• Year: 1971
• Tongue: English
• Weight: 781 KB
• Volume: 17
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00152867

✦ Synopsis

The scattering of radiowaves in the outer solar corona is discussed. Results are given of the decametric wave observations. In the theoretical analysis both regular refraction and the gradients in the electron density fluctuations are considered. The theory is in satisfactory agreement with the experimental data. From their comparison the ratio n = (lr/h) is deduced of the correlation scales in the radial (/~) and transverse directions. This value is not equal to the ratio of the observed distribution dimensions. The frequency dependence of the angular spectrum rms width is not ;~2 at longer wavelengths. At small separations from the Sun, however, the rms angular size cannot serve as the only characteristic of the spectrum, the latter being non-Gaussian. * Referred to in the paper as the Ukr. IRE. Solar Physics 17 (1971) 129-145. All Rights Reserved Copyright 9 1971 by D. Reidel Publishing Company, Dordreeht-Holland * When this work was nearly completed, a paper by Hollweg ( 1970) came to our knowledge (by courtesy of the author who sent us a manuscript before publication). There a non-Gaussian spectrum is postulated, similar to that of the interplanetary magnetic field.