scholarly journals Magnetic field rotation and transition width in rotational discontinuities and Alfvén wave trains

2000 ◽  
Vol 105 (A1) ◽  
pp. 139-155 ◽  
Author(s):  
Y. Lin ◽  
L. C. Lee
Keyword(s):  
Magnetic Field ◽  
Alfven Wave ◽  
Transition Width ◽  
Magnetic Field Rotation ◽  
Wave Trains ◽  
Field Rotation

Magnetic field rotation at high solar latitudes

Solar Physics ◽  
1978 ◽  
Vol 59 (2) ◽  
pp. 243-248 ◽  
Author(s):  
Robert Howard
Keyword(s):  
Magnetic Field ◽  
Magnetic Field Rotation ◽  
Field Rotation

Characterization of magnetic field rotation of steel sheet under uniaxial stress

Measurement ◽  
2012 ◽  
Vol 45 (5) ◽  
pp. 1239-1245 ◽  
Author(s):  
Shih-Kang Kuo ◽  
Sheng-Yang Lin ◽  
Chen-Yuan Lu
Keyword(s):  
Magnetic Field ◽  
Steel Sheet ◽  
Uniaxial Stress ◽  
Magnetic Field Rotation ◽  
Field Rotation

scholarly journals Theory of Protostellar Disk Formation

2015 ◽  
Vol 11 (S315) ◽  
pp. 118-125
Author(s):  
Zhi-Yun Li ◽  
Ruben Krasnopolsky ◽  
Hsien Shang
Keyword(s):  
Magnetic Field ◽  
Rotation Axis ◽  
Misalignment Angle ◽  
Disk Formation ◽  
Magnetic Field Rotation ◽  
Ideal Mhd ◽  
Magnetic Braking ◽  
Field Rotation ◽  
Field Lines ◽  
Protostellar Collapse

AbstractHow large, 100-AU scale, rotationally supported disks form around protostars remains unsettled, both observationally and theoretically. In this contribution, we discuss the theoretical difficulties with disk formation in the presence of a dynamically significant magnetic field and their possible resolutions. These difficulties are caused by the concentration of magnetic field lines close to the forming star by protostellar collapse, and the strong magnetic braking associated with the concentrated field. Possible resolutions include magnetic field-rotation axis misalignment, non-ideal MHD effects, and turbulence. The field-rotation misalignment has been shown to promote disk formation, especially when the field is relatively weak and the misalignment angle is relatively large. Non-ideal MHD effects can enable the formation of small disks at early times. How such disks grow at later times remains to be fully quantified. Turbulence has been found to enable disk formation in a number of simulations, but the exact reason for its beneficial effect is debated.

scholarly journals High Magnetic Field Rotation-powered Pulsars

2011 ◽  
Author(s):  
C.-Y. Ng ◽  
V. M. Kaspi ◽  
Ersin Göğüş ◽  
Ünal Ertan ◽  
Tomaso Belloni
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Magnetic Field Rotation ◽  
Field Rotation

Rheology and Behavior of Magnetic Fluids in Alternating/Rotating Magnetic Fields

2003 ◽  
Author(s):  
Carlos Rinaldi ◽  
Xiaowei He ◽  
Adam Rosenthal ◽  
Thomas Franklin ◽  
Cory Lorenz ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Magnetic Fluids ◽  
Rotating Magnetic Fields ◽  
Magnetic Field Rotation ◽  
Three Phase ◽  
Field Rotation ◽  
And Behavior ◽  
The Magnetic Field ◽  
Cylindrical Test

The rheology and behavior of magnetic fluids in the presence of time-varying magnetic fields is illustrated through three sets of experiments. The first involves measurements of ferrofluid torque on a cylindrical spindle under applied uniform rotating magnetic fields. We measure the torque required to restrain a stationary cylindrical test wall in contact with aqueous ferrofluids subjected to the rotating uniform magnetic field generated by a three-phase AC 2-pole motor stator winding. The torque is found to scale linearly with volume, and to be a function of the applied magnetic field amplitude, frequency and direction of rotation. Measurements show that for ferrofluid entirely inside the cylindrical test wall the torque points in the same direction as the magnetic field rotation pseudovector, whereas for ferrofluid entirely outside the cylindrical wall the torque points in the direction opposite to the field rotation pseudovector. The second set of experiments explores the formation of ordered ferrofluid structures in the gap of a Hele-Shaw cell subjected to simultaneous vertical DC and in-plane horizontal rotating magnetic fields. Finally, the third set of experiments illustrates the effect of applied DC fields on the shape of ferrofluid jets and sheets.

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