Improvement of MEM-deconvolution by an additional constraint

Details Improvement of MEM-deconvolution by an additional constraint Improvement of MEM-deconvolution by an additional constraint

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...166..381r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 166, no. 1-2, Sept. 1986, p. 381-392.

Astronomy and Astrophysics

Astronomy

8

Astronomy, Constraints, Maximum Entropy Method, Astronomical Photography, Data Smoothing, Heuristic Methods, Radio Astronomy, Statistical Correlation

Scientific paper

An attempt is made to improve existing versions of the maximum entropy method (MEM) and their understanding. Additional constraints are discussed, especially the T-statistic which can significantly reduce the correlation between residuals and model. An implementation of the T constraint into MEM requires a new numerical algorithm, which is made to work most efficiently on modern vector-processing computers. The entropy functional is derived from simple mathematical assumptions. The new MEM version is tested with radio data of NGC 6946 and optical data from M 87.

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