Night-time reception of a solar radio event

Nature ◽  
1976 ◽  
Vol 263 (5576) ◽  
pp. 397-397 ◽  
Author(s):  
J. J. RIIHIMAA
Keyword(s):  
1994 ◽  
Vol 144 ◽  
pp. 283-284
Author(s):  
G. Maris ◽  
E. Tifrea

The type II solar radio bursts produced by a shock wave passing through the solar corona are one of the most frequently studied solar activity phenomena. The scientific interest in this type of phenomenon is due to the fact that the presence of this radio event in a solar flare is an almost certain indicator of a future geophysical effect. The origin of the shock waves which produce these bursts is not at all simple; besides the shocks which are generated as a result of a strong energy release during the impulsive phase of a flare, there are also the shocks generated by a coronal mass ejection or the shocks which appear in the interplanetary space due to the supplementary acceleration of the solar particles.


1970 ◽  
Vol 1 (7) ◽  
pp. 316-318 ◽  
Author(s):  
N. R. Labrum ◽  
R. T. Stewart

The U-burst, first identified by Maxwell and Swarup and Haddock, is a type of solar radio event lasting ~ 10 s in which the frequency of the emission at first drifts rapidly downwards, then increases again. On the dynamic spectrum record the burst has the appearance of an inverted letter U.


Solar Physics ◽  
1976 ◽  
Vol 46 (1) ◽  
pp. 229-240 ◽  
Author(s):  
A. Abrami
Keyword(s):  

Nature ◽  
1959 ◽  
Vol 183 (4661) ◽  
pp. 597-598 ◽  
Author(s):  
ALEX. G. SMITH ◽  
T. D. CARR ◽  
W. H. PERKINS

1959 ◽  
Vol 12 (4) ◽  
pp. 404 ◽  
Author(s):  
DJ McLean

A new type of solar radio event, the type IV storm, first described by Boischot, has been identified on Dapto radio.spectrographic records. It has been shown to be distinguishable from type I storms by (i) its smooth spectrum, (ii) its close association with type II bursts, and (iii) its remarkably close association with geomagnetic storms. In common with some type I storms, all type IV storms are found to be associated with very large solar flares.


Author(s):  
A. Hillaris ◽  
O. Malandraki ◽  
K.-L. Klein ◽  
P. Preka-Papadema ◽  
X. Moussas ◽  
...  

1968 ◽  
Vol 35 ◽  
pp. 598-599
Author(s):  
A. Koeckelenbergh

This work analyses some correlations or associations between certain features of solar radio bursts at 600 Mc/s and of associated chromospheric flares respectively. Subject of the analysis are 149 radio events observed at the Humain station and 125 associated flares observed at Uccle during the years 1957–61. It is found that the radioelectric energy of the bursts is associated with the eruptive area and the Hα intensity of the flares, whereas the duration of the bursts is associated with the Hα broadening. For bursts connected with a second phase, the eruptive area and the importance of the magnetic field have a bearing on the characteristics of the radio event.


1959 ◽  
Vol 9 ◽  
pp. 263-267 ◽  
Author(s):  
A. Boischot ◽  
A. D. Fokker

On 1957 November 4, an unprecedented solar radio event was observed at meter wavelengths. Observations at 169 Mc/s were obtained by the Nançay Observatory (great interferometer and simple radio telescope) and by the Humain Observatory. At 200 Mc/s the event was observed by the Nera Observatory.


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