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 88
- Downloads 0
LARGE-SCALE BIOPHYSICAL EXPERIMENT "GELIOMED-2"
Results and new design of large-scale biophysical experiment "Geliomed 2" discusses.
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...
THE PHYSICAL PARAMETERS OF THE GAS AND DUST IN COMETARY ATMOSPHERES
The results of observations and studies of comets on the basis of the optical spectra with an average resolution were presented. Spectral material was mainly produced in 2009–2012 with the help 2-m telescope Zeiss (F1 =...
PREHEATING THE UNIVERSE AFTER INFLATION
Inflationary stage is followed by particle production in the background of an oscillating inflaton field, which process is called preheating. For sufficiently strong couplings between the inflaton and matter fields, it i...
INVESTIGATION OF DIFFUSE INTERSTELLAR BANDS OF ORGANIC MOLECULES IN THE SPECTRA OF CEPHEID STARS
We describe an effective method of investigation of the Diffuse Interstellar Bands (DIBs) in the spectra of Cepheid stars. DIBs are believed to originate from the absorption of such carriers as polycyclic aromatic hydroc...