Occurrence rate of SAR arcs during the 23rd solar activity cycle

2009 ◽  
Vol 44 (4) ◽  
pp. 524-527 ◽  
Author(s):  
V.N. Alexeyev ◽  
I.B. Ievenko ◽  
S.G. Parnikov
2000 ◽  
Vol 179 ◽  
pp. 251-254
Author(s):  
Vladislav Timofeev ◽  
Sergey Starodubtsev

AbstractThe experiment with 10K-80 aboard the INTER-BALL-2 (which detects protons with energies > 7, 27–41, 41–58, 58–88, 88–180 and 180–300 MeV) registered six events of the solar energetic particle (SEP) increase. These events are during the initial rise phase of the 23rd solar activity cycle. Solar flares with the SEP generation are accompanied by coronal mass ejection (CME). Here we analyze the dynamics of the differential energy spectrum at different phases of the SEP increase.


2012 ◽  
Vol 8 (S294) ◽  
pp. 533-534
Author(s):  
Ahmed A. Hady

AbstractGeomagnetic and solar storms and their occurrence rate with respect to the solar activity cycle is an important topic of space environment research. The minimum of solar activity during the solar cycle number 23 (SC-23) have detectable effects on the space environments, where the monthly mean of sunspot number and solar proton events effecting the space environment and produced many of Geophysical effects. A detailed study of the centers of activity produced the proton events are carried out. The electromagnetic emissions at the different bands during the impulsive phase of the flare are tabulated and discussed. The different Geophysical effects due to the events are studied. Conclusions about the proton solar events at minimum activity are presented.


2020 ◽  
Vol 60 (5) ◽  
pp. 586-596 ◽  
Author(s):  
A. D. Danilov ◽  
A. V. Konstantinova

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