Effect of turbulent interstellar plasma on the response of a radio interferometer

Details Effect of turbulent interstellar plasma on the response of a radio interferometer Effect of turbulent interstellar plasma on the response of a radio interferometer

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995azh....72..485s&link_type=abstract

Astronomicheskij Zhurnal, vol. 72, p. 485

Astronomy and Astrophysics

Astronomy

11

Interstellar Matter, Plasma Turbulence, Radio Interferometers, Wave Scattering, Statistical Analysis, Scintillation, Fluctuation Theory

Scientific paper

We consider the effect of radio emission scattering on interstellar plasma inhomogeneities, as well as that of diffraction and refraction interstellar scintillations on the mean and squared amplitude of the interferometer response. The squared amplitude of the interferometer response in the cases of weak and strong scintillations is derived. It is shown to be equal to the squared amplitude of the initial visibility function. For weak scintillations, this result is not affected by the source size; for strong scintillations, this holds for sufficiently compact sources. We present observational data on the scattering and scintillation parameters that affect the interferometer response.

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