The Effect of Scattering on Solar Radio Sources at 80 MHz

1972 ◽  
Vol 2 (2) ◽  
pp. 98-100 ◽  
Author(s):  
A. C. Riddle
Keyword(s):  
Plasma Level ◽  
Electron Density ◽  
Solar Radio ◽  
Brightness Distribution ◽  
Time Profile ◽  
Radio Sources ◽  
Density Structure ◽  
Localized Source ◽  
Type Iii

Scattering of radiation from solar radio sources by in homogeneities in the electron density structure of the corona can have marked effects on the observed time profile and the brightness distribution. These effects are appreciable for any localized source emitting a brief burst of radiation and are most pronounced when the radiation propagates close to the plasma level; it is such sources, illustrated here by those of type III bursts, that will be considered in this paper.

Dynamics of Langmuir and ion-sound waves in type III solar radio sources

1993 ◽  
Vol 408 ◽  
pp. 720 ◽  
Author(s):  
P. A. Robinson ◽  
A. J. Willes ◽  
I. H. Cairns
Keyword(s):  
Solar Radio ◽  
Radio Sources ◽  
Sound Waves ◽  
Type Iii

Scatter in the Positions of Sources of Associated Type III Solar Bursts

1970 ◽  
Vol 1 (7) ◽  
pp. 313-315 ◽  
Author(s):  
D. J. McLean
Keyword(s):  
Plasma Level ◽  
Radio Emission ◽  
Structural Feature ◽  
Solar Disk ◽  
Solar Radio ◽  
Solar Radio Emission ◽  
Type Iii ◽  
Simple Hypothesis ◽  
Solar Bursts ◽  
Outer Corona

For a number of years the occurrence of isolated groups of apparently related type III bursts has been recognized as a common feature of the dynamic spectral records of solar radio emission at metre wavelengths. Interferometer observations supported the simple hypothesis that bursts of a group were usually located in the same position. In this note we report 80 MHz observations made with the Culgoora radioheliograph which show that although the sources of the bursts in a group tend to overlap one another, their centroids may show marked scatter and that their distribution tends to be along narrow lanes across the solar disk. Since the 80 MHz sources occur at heights (≳ 0.6 R⊙) near or above the plasma level, these lanes doubtless reflect some structural feature of the outer corona.

The Heights of Solar Radio Sources at 1424 MHz and 696 MHz

1969 ◽  
Vol 1 (5) ◽  
pp. 192-194 ◽  
Author(s):  
D. G. Cole ◽  
R. F. Mullaly
Keyword(s):  
Solar Activity ◽  
High Resolution ◽  
Solar Disk ◽  
Previous Investigation ◽  
Solar Radio ◽  
Radio Sources ◽  
Grating Interferometer ◽  
Maximum Solar Activity

The heights of solar radio sources at 1424 MHz and 696 MHz have been measured during the years 1965 and 1966. Solar activity at this time was near minimum. The number of radio sources appearing on the solar disk rarely exceeded three at any time and it thus was possible to resolve the majority of these with a high resolution grating interferometer. Many of the previous height measurements at these frequencies have been made near times of maximum solar activity and the confusion of sources within the beam has limited their accuracy. The number of sources studied here is quite considerably higher than in any previous investigation at these frequencies, and the period of observation has been continuous.

scholarly journals A statistical study of solar radio Type III bursts and space weather implication

2020 ◽  
Author(s):  
Theogene Ndacyayisenga ◽  
Jean Uwamahoro ◽  
K. Sasikumar Raja ◽  
Christian Monstein
Keyword(s):  
Space Weather ◽  
Solar Radio ◽  
Statistical Study ◽  
Type Iii

Electron Exciter Speeds Associated with Interplanetary Type III Solar Radio Bursts

Solar Physics ◽  
2015 ◽  
Vol 290 (10) ◽  
pp. 2975-3004 ◽  
Author(s):  
M. J. Reiner ◽  
R. J. MacDowall
Keyword(s):  
Solar Radio ◽  
Radio Bursts ◽  
Solar Radio Bursts ◽  
Type Iii
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