LONGTERM CHANGES OF SOLAR ACTIVITY ASYMMETRY
Journal Title: Odessa Astronomical Publications - Year 2015, Vol 28, Issue 2
Abstract
We report results of analysis of the northsouth asymmetry of solar activity, solar magnetic fields. The analysis is based on the sunspot data, 1875–2015 (http://solarscience.msfc.nasa.gov/greenwch.shtml), largescale solar magnetic field (solar mean magnetic field, SMMF) and solar polar magnetic field time series, 1975– 2015 (http://wso.stanford.edu). To study long-term changes of solar activity asymmetry we applied analysis of cumulative sum. Cumulative sum averages shortperiodic changes and identifies long-term periodicity. Minimum of cumulative sum of sunspot area mean monthly values time series occurs in ~1910, maximum – in ~1980. Perhaps this is branch growth of long-term (~140-years) cycle of solar activity asymmetry. Cumulative sums of polar magnetic field of different pole have ~22-years periodicity. Change of cumulative sum of SMMF time series has different character. But long-run trend with intervals of positive and (or) negative polarity of ~22 years is observed.
Authors and Affiliations
U. M. Leiko
Keywords
Related Articles
- EP ID EP603175
- DOI -
- Views 80
- Downloads 0
INFLUENCE OF SPACE WEATHER ON A CARDIOVASCULAR SYSTEM OF A HUMAN BEING DURING VARIOUS SOLAR CYCLE PHASES
The study of relationship of dynamics of space weather parameters to changes of cardiovascular system state of a human being was carried out by data of measurements of volunteer groups in October – December 2009 and Marc...
FEATURES OF KOTLIN ORBIT ESTIMATION LIBRARY
Since the launch of Sputnik 1, the number of objects in near-earth orbit has been constantly increasing. The growth of number of these objects increases the risk of their collisions with existing satellites and ones whic...
PHOTOMETRICAL STUDY OF OVERCONTACT BINARY SYSTEM V859Cyg
Wepresent the results of photometrical research of close binary system V859Cyg with possible period variations. The light curve of the star was constructed using V-band magnitudes, obtainedin 2007, 2009, 2014 years in K...
THE SOLAR-RADIATION PRESSURE EFFECTS ON THE ORBITAL EVOLUTION OF ASTEROID MOONS
In the theory of motion, disturbances are divided into gravitational and non-gravitational ones. In this paper, we discuss the effects of solar-radiation pressure on the orbital evolution of asteroid moons. It is known f...
ISENTROPIC "SHOCK WAVES" IN NUMERICAL ASTROPHYSICS
Numerical simulations of the cold supersonic flows in different astrophysical problems meets with the loss of precision difficulty. For to overcome the difficulty it was suggested earlier to use conservation entropy equa...