scholarly journals Supercriticality of the Dynamo Limits the Memory of the Polar Field to One Cycle

2021 ◽  
Vol 913 (1) ◽  
pp. 65
Author(s):  
Pawan Kumar ◽  
Bidya Binay Karak ◽  
Vindya Vashishth
Keyword(s):  
Polar Field

The Sun as a Magnetic Star

1976 ◽  
Vol 32 ◽  
pp. 457-463
Author(s):  
John M. Wilcox ◽  
Leif Svalgaard
Keyword(s):  
Recent Work ◽  
Rotation Axis ◽  
Polar Field ◽  
Magnetic Star ◽  
Rotational Axis ◽  
Field Variation ◽  
The Sun ◽  
Arbitrary Angle ◽  
Solar Magnetism ◽  
Oblique Rotator

SummaryThe sun as a magnetic star is described on the basis of recent work on solar magnetism. Observations at an arbitrary angle to the rotation axis would show a 22-year polar field variation and a 25-day equatorial sector variation. The sector variation would be similar to an oblique rotator with an angle of 90° between the magnetic and rotational axis.

PHOTOINDUCED NONLINEAR OCTUPOLAR POLARIZATION: TRANSIENT AND PERMANENT REGIMES

1996 ◽  
Vol 05 (04) ◽  
pp. 653-670 ◽  
Author(s):  
CÉLINE FIORINI ◽  
JEAN-MICHEL NUNZI ◽  
FABRICE CHARRA ◽  
IFOR D.W. SAMUEL ◽  
JOSEPH ZYSS
Keyword(s):  
Theoretical Analysis ◽  
Second Harmonic ◽  
Experimental Results ◽  
Polar Field ◽  
Rotational Spectrum ◽  
Dual Frequency ◽  
One Dimensional ◽  
Ethyl Violet ◽  
Disperse Red 1 ◽  
Good Agreement

An original poling method using purely optical means and based on a dual-frequency interference process is presented. We show that the coherent superposition of two beams at fundamental and second-harmonic frequencies results in a polar field with an irreducible rotational spectrum containing both a vector and an octupolar component. This enables the method to be applied even to molecules without a permanent dipole such as octupolar molecules. After a theoretical analysis of the process, we describe different experiments aiming at light-induced noncentrosymmetry performed respectively on one-dimensional Disperse Red 1 and octupolar Ethyl Violet molecules. Macroscopic octupolar patterning of the induced order is demonstrated in both transient and permanent regimes. Experimental results show good agreement with theory.

Diagnostics of Polar Field Reversal in Solar Cycle 23 Using a Flux Transport Dynamo Model

2004 ◽  
Vol 601 (2) ◽  
pp. 1136-1151 ◽  
Author(s):  
Mausumi Dikpati ◽  
Giuliana de Toma ◽  
Peter A. Gilman ◽  
Charles N. Arge ◽  
Oran R. White
Keyword(s):  
Solar Cycle ◽  
Polar Field ◽  
Dynamo Model ◽  
Flux Transport ◽  
Field Reversal ◽  
Solar Cycle 23

scholarly journals Modeling the radio outbursts in AE Aquarii

2004 ◽  
Vol 190 ◽  
pp. 307-313
Author(s):  
L. A. Venter ◽  
P. J. Meintjies
Keyword(s):  
Magnetic Field ◽  
Wide Frequency Range ◽  
Polar Field ◽  
Synchrotron Emission ◽  
Frequency Range ◽  
Thermal Radio ◽  
Infra Red ◽  
Peak Flux ◽  
Order Of Magnitude

AbstractIn this paper we model the non-thermal radio to infra-red flares from AE Aqr. In our model the non-thermal flares originate in highly magnetized (Bblob ≥ 2000 G) blobs that may be among the propeller ejected outflow. It was shown that the condition ß ≤ 1 constrains the frozen-in magnetic field in these blobs to Bblob ≥ 2000 G, which is of the same order of magnitude as the inferred polar field of the secondary. As these magnetized blobs encounter the violent mhd-propeller, processes such as reconnection, magnetic pumping, and shocks will result in continuous acceleration of electrons from (γ = 2 → 30; δ = 2.8 → 2.6) with resultant synchrotron emission. The total radio to infra-red flare spectrum was modelled in terms of such expanding magnetized synchrotron emitting blobs in various stages of their evolution from ρ = (r/r°) = 1 → 400. In terms of our model, the total integrated flux during outbursts, over the wide frequency range from 1 GHz is the result of several (~ 20) synchrotron emitting blobs observed in different stages of their evolution, resulting in a spectrum showing a peak flux of Sv ~ 148 mJy at v ~ 1805 GHz (~ 166 microns), where the spectrum changes from a typical self-absorbed Sv ∝ vα spectrum to Sv ∝ v-(δ-1)/2 spectrum, i.e. where the blobs are combined optically thin.

Polar Field Reversals and Active Region Decay

2015 ◽  
Vol 210 (1-4) ◽  
pp. 77-108 ◽  
Author(s):  
Gordon Petrie ◽  
Sophie Ettinger
Keyword(s):  
Active Region ◽  
Polar Field

scholarly journals POLAR FIELD REVERSAL OBSERVATIONS WITHHINODE

2012 ◽  
Vol 753 (2) ◽  
pp. 157 ◽  
Author(s):  
D. Shiota ◽  
S. Tsuneta ◽  
M. Shimojo ◽  
N. Sako ◽  
D. Orozco Suárez ◽  
...  
Keyword(s):  
Polar Field ◽  
Field Reversal

scholarly journals SOCIOMETRIC CHARACTERISTICS OF THE EFFECTIVENESS OF TEAM INTERACTION OF INDIVIDUALS WITH DIFFERENT EXPRESSION OF A FIELD-DEPENDENT COGNITIVE STYLE

2020 ◽  
Vol 13 (3) ◽  
pp. 71-79
Author(s):  
Irina Ivanovna Shoshina ◽  
Elena Evgenievna Chauzova
Keyword(s):  
Cognitive Style ◽  
Interpersonal Communication ◽  
Field Dependence ◽  
Cognitive Styles ◽  
Polar Field ◽  
Interpersonal Interaction ◽  
Field Independence ◽  
Intellectual Activity ◽  
Team Interaction ◽  
Field Dependent

Background: The effectiveness of team interaction is often assessed through sociometric indicators, namely sociometric status and emotional reciprocity. At the same time, interpersonal interaction is a cognitive process, since it includes such mental processes as perception, categorization, thinking, speech, etc., which serve for information processing. These individual differences in the way information is processed underlie the concept of cognitive styles. Therefore, cognitive styles can hypothetically be considered as characteristics of interpersonal interaction and a predictor of its effectiveness. Aim: The paper aims to determine the sociometric characteristics of the effectiveness of team interaction of persons with different degree of the field-dependent cognitive style. Materials and methods. To assess field-dependence/field-independence, the Gottschaldt Embedded Figures method was used. The effectiveness of team interaction was assessed using the Moreno small group study method. Statistical analysis was performed with the Mann-Whitney test using IBM SPSS Statistics 23. Results. It was found that persons with a mobile field-dependent cognitive style had a significantly higher hierarchical position and a stable position in the system of nterpersonal relations compared with persons with a polar field-dependent cognitive style. Evidence was obtained on the splitting of field dependence into polar field-dependent and mobile field-dependent styles. Conclusion. Field-dependence/field-independence can be considered as one of the basic inner qualities of a person's intellectual activity, which influences his/her behavior and interpersonal communication.

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