Solitary fluid transients in rectangular ducts with transverse magnetic fields

1978 ◽  
Vol 29 (1) ◽  
pp. 35-53 ◽  
Author(s):  
John S. Walker
Keyword(s):  
Magnetic Fields ◽  
Transverse Magnetic ◽  
Fluid Transients

Radio Measurements of Coronal Magnetic Fields

1994 ◽  
Vol 144 ◽  
pp. 21-28 ◽  
Author(s):  
G. B. Gelfreikh
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Solar Corona ◽  
Active Regions ◽  
High Sensitivity ◽  
Coronal Magnetic Field ◽  
Transverse Magnetic ◽  
Radio Sources ◽  
Radio Waves ◽  
Solar Active Regions

AbstractA review of methods of measuring magnetic fields in the solar corona using spectral-polarization observations at microwaves with high spatial resolution is presented. The methods are based on the theory of thermal bremsstrahlung, thermal cyclotron emission, propagation of radio waves in quasi-transverse magnetic field and Faraday rotation of the plane of polarization. The most explicit program of measurements of magnetic fields in the atmosphere of solar active regions has been carried out using radio observations performed on the large reflector radio telescope of the Russian Academy of Sciences — RATAN-600. This proved possible due to good wavelength coverage, multichannel spectrographs observations and high sensitivity to polarization of the instrument. Besides direct measurements of the strength of the magnetic fields in some cases the peculiar parameters of radio sources, such as very steep spectra and high brightness temperatures provide some information on a very complicated local structure of the coronal magnetic field. Of special interest are the results found from combined RATAN-600 and large antennas of aperture synthesis (VLA and WSRT), the latter giving more detailed information on twodimensional structure of radio sources. The bulk of the data obtained allows us to investigate themagnetospheresof the solar active regions as the space in the solar corona where the structures and physical processes are controlled both by the photospheric/underphotospheric currents and surrounding “quiet” corona.

Control of photon beam dose profiles by localized transverse magnetic fields

2000 ◽  
Vol 45 (12) ◽  
pp. N177-N182 ◽  
Author(s):  
L Reiffel ◽  
A Li ◽  
J Chu ◽  
R W Wheatley ◽  
S Naqvi ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Transverse Magnetic ◽  
Photon Beam ◽  
Beam Dose
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