Phaseless aperture synthesis.
Abstract
Two techniques of general use in radio-astronomical interferometry are presented for analyzing aperture-synthesis data without employing phase information. In the first, a trial map is derived from observed amplitudes alone; in the second, the true distribution of brightness is deduced from the trial map by an iterative procedure. These techniques are similar to those used in solving molecular structures from X-ray diffraction patterns. A practical test, using data from the 5C 7 survey, is presented.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- February 1978
- DOI:
- 10.1093/mnras/182.3.411
- Bibcode:
- 1978MNRAS.182..411B
- Keywords:
-
- Astronomical Maps;
- Interstellar Radiation;
- Radio Astronomy;
- Radio Interferometers;
- Astronomical Models;
- Fourier Transformation;
- Iterative Solution;
- Point Sources;
- Very Long Base Interferometry;
- Astronomy;
- Aperture Synthesis:Radio Interferometry