INFLUENCE OF TOROIDAL MAGNETIC FIELD ON CONVECTION IN ROTATING STAR

1979 ◽  
Vol 40 (C7) ◽  
pp. C7-707-C7-708
Author(s):  
V. M. Čadež
Keyword(s):  
Magnetic Field ◽  
Toroidal Magnetic Field ◽  
Rotating Star

scholarly journals Broadband Linear Polarization in Ap Stars

1993 ◽  
Vol 138 ◽  
pp. 305-309
Author(s):  
Marco Landolfi ◽  
Egidio Landi Degl’Innocenti ◽  
Maurizio Landi Degl’Innocenti ◽  
Jean-Louis Leroy ◽  
Stefano Bagnulo
Keyword(s):  
Magnetic Field ◽  
Circular Polarization ◽  
Linear Polarization ◽  
Rotation Axis ◽  
Spectral Lines ◽  
Line Of Sight ◽  
Long Time ◽  
Rotating Star ◽  
Ap Stars ◽  
The Magnetic Field

AbstractBroadband linear polarization in the spectra of Ap stars is believed to be due to differential saturation between σ and π Zeeman components in spectral lines. This mechanism has been known for a long time to be the main agent of a similar phenomenon observed in sunspots. Since this phenomenon has been carefully calibrated in the solar case, it can be confidently used to deduce the magnetic field of Ap stars.Given the magnetic configuration of a rotating star, it is possible to deduce the broadband polarization at any phase. Calculations performed for the oblique dipole model show that the resulting polarization diagrams are very sensitive to the values of i (the angle between the rotation axis and the line of sight) and β (the angle between the rotation and magnetic axes). The dependence on i and β is such that the four-fold ambiguity typical of the circular polarization observations ((i,β), (β,i), (π-i,π-β), (π-β,π-i)) can be removed.

Features of the Radial and Axial Distributions of the Toroidal Magnetic Field in the Axial Jet Ejection at the PF-3 Facility

2021 ◽  
Vol 47 (9) ◽  
pp. 912-937
Author(s):  
V. I. Krauz ◽  
K. N. Mitrofanov ◽  
V. V. Myalton ◽  
I. V. Il’ichev ◽  
A. M. Kharrasov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Toroidal Magnetic Field

Nonaxisymmetric Instabilities of a Toroidal Magnetic Field in a Rotating Sphere

2003 ◽  
Vol 585 (2) ◽  
pp. 1124-1137 ◽  
Author(s):  
Keke Zhang ◽  
Xinhao Liao ◽  
Gerald Schubert
Keyword(s):  
Magnetic Field ◽  
Toroidal Magnetic Field ◽  
Rotating Sphere

New Lens System Using Toroidal Magnetic Field for Intense Ion Beam

1977 ◽  
Vol 16 (3) ◽  
pp. 491-496 ◽  
Author(s):  
Akihiro Mohri ◽  
Kazunari Ikuta ◽  
Junji Fujita
Keyword(s):  
Magnetic Field ◽  
Ion Beam ◽  
Toroidal Magnetic Field ◽  
Lens System

Buckling of a Superconducting Ring in a Toroidal Magnetic Field

1979 ◽  
Vol 46 (1) ◽  
pp. 151-155 ◽  
Author(s):  
F. C. Moon
Keyword(s):  
Magnetic Field ◽  
Theoretical Model ◽  
Toroidal Magnetic Field ◽  
Magnetic Fusion ◽  
Poloidal Field ◽  
Superconducting Ring ◽  
Tokamak Reactors ◽  
Linear And Nonlinear ◽  
Mode A ◽  
Theory And Experiment

Experimental evidence and a theoretical model are presented for the magnetoelastic buckling of a rigid superconducting ring in a steady circumferential (toroidal)magnetic field. The theoretical model predicts a coupled translation and pitch displacement of the coil in the buckled mode. A discussion is given of both the linear and nonlinear magnetic perturbation forces. The experiments were conducted in liquid helium (4.2°K). The lowest natural frequency of the rigid coil on elastic springs was observed to decrease near the buckling current. Agreement between theory and experiment is fair. These results may have design implications for poloidal field coils in magnetic fusion Tokamak reactors.

Fusion triple product increase in ten times in the compact spherical tokamak Globus-M2 due the doubling of the toroidal magnetic field

2021 ◽  
Author(s):  
Gleb Kurskiev ◽  
Vasily K Gusev ◽  
Nikolay Sakharov ◽  
I M Balachenkov ◽  
Nikolai Nikolaevich Bakharev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Triple Product ◽  
Toroidal Magnetic Field ◽  
Spherical Tokamak ◽  
Product Increase

Are there local dynamo in solar polar region?

2019 ◽  
Vol 15 (S354) ◽  
pp. 123-126
Author(s):  
Chunlan Jin
Keyword(s):  
Magnetic Field ◽  
Active Region ◽  
Polar Region ◽  
Toroidal Magnetic Field ◽  
Polar Magnetic Field ◽  
Random State

AbstractPolar magnetic field, as a component produced by the global dynamo, is thought to be the remant of toroidal magnetic field transported poleward from Sun’s active belt. With the improvement of instruments, more and more observations are challenging the viewpoint. Recently, we identify the bipolar magnetic emergences (BMEs) in the polar region, and find that the distribution of the magnetic axes for these BMEs shows random state, which does not follow the Joy’s law of active region. The result implies the possible existence of local dynamo in the solar polar region.

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