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| Paper: |
Source-noise in radio synthesis images |
| Volume: |
19, Radio Interferometry: Theory, Techniques, and Applications, IAU Colloquium 131 |
| Page: |
6 |
| Authors: |
Anantharamaiah, K. R.; Deshpande, A. A.; Radhakrishnan, V.; Ekers, R. D.; Cornwell, T. J.; Goss, W. M. |
| Abstract: |
The distribution of source- and receiver-noise in radio synthesis images is discussed, and it is shown that the source-noise is maximum at the position of the source but also appears in the off-source region because of the sidelobes. Analytical expressions are derived for the rms noise at any location of both 'total-power' and 'correlation' images. It is shown that under certain conditions, deconvolution can remove the source noise from the off-source region in snap-shot images. Some of the results are verified experimentally. |
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