scholarly journals An empirical model of electron temperatures in the Mars ionosphere based on Langmuir probe measurements in the descending phase of solar cycle 24

Icarus ◽  
2021 ◽  
pp. 114721
Author(s):  
M.D. Pilinski ◽  
L. Andersson ◽  
E.M.B. Thiemann
2014 ◽  
Vol 4 (2) ◽  
pp. 477-483
Author(s):  
Debojyoti Halder

Sunspots are temporary phenomena on the photosphere of the Sun which appear visibly as dark spots compared to surrounding regions. Sunspot populations usually rise fast but fall more slowly when observed for any particular solar cycle. The sunspot numbers for the current cycle 24 and the previous three cycles have been plotted for duration of first four years for each of them. It appears that the value of peak sunspot number for solar cycle 24 is smaller than the three preceding cycles. When regression analysis is made it exhibits a trend of slow rising phase of the cycle 24 compared to previous three cycles. Our analysis further shows that cycle 24 is approaching to a longer-period but with smaller occurrences of sunspot number.


Solar Physics ◽  
2015 ◽  
Vol 290 (5) ◽  
pp. 1417-1427 ◽  
Author(s):  
A. Shanmugaraju ◽  
M. Syed Ibrahim ◽  
Y.-J. Moon ◽  
A. Mujiber Rahman ◽  
S. Umapathy

Space Weather ◽  
2017 ◽  
Vol 15 (12) ◽  
pp. 1649-1660 ◽  
Author(s):  
E. M. B. Thiemann ◽  
M. Dominique ◽  
M. D. Pilinski ◽  
F. G. Eparvier

2004 ◽  
Vol 44 (7-8) ◽  
pp. 650-655 ◽  
Author(s):  
K. Horvath ◽  
J. Lingertat ◽  
M. Laux ◽  
F. Wagner

2016 ◽  
Vol 56 (8) ◽  
pp. 1082-1089 ◽  
Author(s):  
B. Kirov ◽  
S. Asenovski ◽  
D. Bachvarov ◽  
A. Boneva ◽  
V. Grushin ◽  
...  

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