✦ LIBER ✦

The relationship between the slowly varying component of solar radio emission and large scale photospheric magnetic field patterns

✍ Scribed by P. H. Scherrer; M. El-Raey

Publisher: Springer
Year: 1974
Tongue: English
Weight: 385 KB
Volume: 35
Category: Article
ISSN: 0038-0938
DOI: 10.1007/bf00151958

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✦ Synopsis

Daily solar radio flux observations have been examined for a relationship to the large-scale photospheric magnetic field structure. Interplanetary magnetic field sector boundaries were used to indicate boundaries between photospheric field regions of opposite polarity. An enhancement in emission was found about four days before the boundary central meridian passage. Most of the effect came from emission near toward-to-away type boundaries. A higher level of emission appears to be associated with toward field regions than with away field regions.

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We have observed the slowly varying component of solar radio emission at a frequency of 34.5 MHz with half power beam widths of 26'/40' in the east-west and north-south directions, respectively. It is found that the observed brightness temperatures vary within the limits of 0.3x 106 K to 1.5 x 106 K