Interferometric Visibility of a Scintillating Source

Details Interferometric Visibility of a Scintillating Source Interferometric Visibility of a Scintillating Source

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001apj...554.1197g&link_type=abstract

The Astrophysical Journal, Volume 554, Issue 2, pp. 1197-1209.

Astronomy and Astrophysics

Astronomy

3

Scattering, Techniques: Interferometric

Scientific paper

I calculate the distribution of the product of complex factors drawn from a bivariate Gaussian distribution. The interferometric visibility of a scintillating point source follows this distribution. I find the distributions of the real part, the imaginary part, and the amplitude of the product. I investigate effects of a small, partially resolved source on the distribution. These effects depend on whether the source is elongated, and if so, on its orientation relative to the interferometer baseline. A single sample of interferometric visibility, for any source, is also the product of complex factors drawn from a bivariate Gaussian distribution.

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