Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....98..244e&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 98, July 1989, p. 244-266.
Astronomy and Astrophysics
Astronomy
13
Magnetohydrodynamic Turbulence, Polarization (Waves), Radio Sources (Astronomy), Synchrotron Radiation, Magnetic Fields, Relativistic Electron Beams, Very Large Array (Vla)
Scientific paper
Recent theories of magnetohydrodynamic turbulence are used to construct microphysical turbulence models, with emphasis on models of anisotropic turbulence. These models have been applied to the determination of the emergent polarization from a resolved uniform source. It is found that depolarization alone is not a unique measure of the turbulence, and that the turblence will also affect the total-intensity distributions. Fluctuations in the intensity image can thus be employed to measure turbulence strength. In the second part, it is demonstrated that a power-spectral analysis of the total and polarized intensity images can be used to obtain the power spectra of the synchrotron emission.
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