CYCLE LENGTH DEPENDENCE OF STELLAR MAGNETIC ACTIVITY AND SOLAR CYCLE 23

2015 ◽  
Vol 802 (1) ◽  
pp. 67 ◽  
Author(s):  
Hwajin Choi ◽  
Jeongwoo Lee ◽  
Suyeon Oh ◽  
Bogyeong Kim ◽  
Hoonkyu Kim ◽  
...  
Keyword(s):  
Solar Cycle ◽  
Cycle Length ◽  
Magnetic Activity ◽  
Length Dependence ◽  
Solar Cycle 23 ◽  
Stellar Magnetic Activity

scholarly journals Modelling solar cycle length based on Poincaré maps for Lorenz-type equations

2010 ◽  
Vol 28 (4) ◽  
pp. 993-1002 ◽  
Author(s):  
H. Lundstedt ◽  
T. Persson
Keyword(s):  
Dynamical Systems ◽  
Solar Cycle ◽  
Dynamic System ◽  
Cycle Length ◽  
Fractal Structure ◽  
Magnetic Activity ◽  
Long Tail ◽  
Solar Magnetic Activity ◽  
General Relations ◽  
Solar Cycle Length

Abstract. Two systems of Lorenz-type equations modelling solar magnetic activity are studied: Firstly a low order dynamic system in which the toroidal and poloidal fields are represented by x- and y-coordinates respectively, and the hydrodynamical information is given by the z coordinate. Secondly a complex generalization of the three ordinary differential equations studied by Lorenz. By studying the Poincaré map we give numerical evidence that the flow has an attractor with fractal structure. The period is defined as the time needed for a point on a hyperplane to return to the hyperplane again. The periods are distributed in an interval. For large values of the Dynamo number there is a long tail toward long periods and other interesting comet-like features. These general relations found for periods can further be physically interpreted with improved helioseismic estimates of the parameters used by the dynamical systems. Solar Dynamic Observatory is expected to offer such improved measurements.

scholarly journals The variations of solar magnetic networks over the solar cycle 23

2012 ◽  
Vol 8 (S294) ◽  
pp. 151-152
Author(s):  
Chong Huang ◽  
Yihua Yan ◽  
Yuanyong Deng ◽  
Yin Zhang ◽  
Baolin Tan ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Solar Cycle ◽  
Magnetic Activity ◽  
Watershed Algorithm ◽  
Heliospheric Observatory ◽  
Solar Cycle 23 ◽  
Solar Magnetic Activity ◽  
Doppler Interferometer

AbstractThis work analyzed the morphologic properties of magnetic networks during Carrington Rotations (CRs) 1955 to 2091 by applying the watershed algorithm to magnetograms observed by the Michelson Doppler Interferometer on board the Solar and Heliospheric Observatory spacecraft. We found that the magnetic networks are of fractal and the average fractal dimension is Df=1.253±0.011. We also find that both the fractal dimension and the size of magnetic networks are anti-correlated with the solar magnetic activity.

Mid-term Periodicities in Solar Radio Emission Corresponding to Sunspot Number During Solar Cycle 23

Solar Physics ◽  
2021 ◽  
Vol 296 (3) ◽  
Author(s):  
Mahender Aroori ◽  
Panditi Vemareddy ◽  
Partha Chowdhury ◽  
Ganji Yellaiah
Keyword(s):  
Solar Cycle ◽  
Radio Emission ◽  
Sunspot Number ◽  
Solar Radio ◽  
Solar Radio Emission ◽  
Solar Cycle 23

Kinetics of Cycle Length Dependence of Ventricular Repolarization:.

1995 ◽  
Vol 6 (3) ◽  
pp. 163-169 ◽  
Author(s):  
ERNST A. RAEDER ◽  
PAUL ALBRECHT ◽  
MICHAEL PERROTT ◽  
RICHARD J. COHEN
Keyword(s):  
Cycle Length ◽  
Ventricular Repolarization ◽  
Length Dependence ◽  
Kinetics Of
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