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Distribution of hemispheric solar activity during various phases of solar cycles

Published online by Cambridge University Press:  27 November 2018

G. L. Jayalekshmi  and
P. R. Prince
G. L. Jayalekshmi
Affiliation:
Department of Physics, University College Thiruvananthapuram, Kerala, India email: jayalekshmigl@yahoo.co.in
P. R. Prince
Affiliation:
Department of Physics, University College Thiruvananthapuram, Kerala, India princerprasad@gmail.com
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Abstract

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Hemispheric asymmetry is one of the significant parameters related to the action of solar dynamo. Comparison of hemispheric activities during various phases are found out for solar cycles 12 to 23. Asymmetry of solar activity shows extremum values during the cycles 14 and 19. Lowest and highest levels of north-south asymmetry are mainly observed during minimum and maximum phases respectively of solar cycles. A change of phase is found to be existing between the asymmetries at solar maxima and the whole cycle, after solar cycle 15 and 18. Also, for cycles 17-19, the behaviour of the asymmetry is observed to be peculiar and different from that of the other cycles. Periodic behaviour of north-south asymmetry mainly occurs in 8.8 years and noticed very high during the cycles 18-22.

Keywords

Solar cyclesolar activitysunspot area, etc.
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S340: Long-term Datasets for the Understanding of Solar and Stellar Magnetic Cycles , February 2018 , pp. 261 - 262
Copyright
Copyright © International Astronomical Union 2018 

References

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