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http://hdl.handle.net/2289/1601
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DC Field | Value | Language |
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dc.contributor.author | Nityananda, R. | - |
dc.contributor.author | Narayan, R. | - |
dc.date.accessioned | 2006-12-19T10:46:05Z | - |
dc.date.available | 2006-12-19T10:46:05Z | - |
dc.date.issued | 1983-02 | - |
dc.identifier.citation | Astronomy and Astrophysics, 1983, Vol.118, p194-196 | en |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.uri | http://hdl.handle.net/2289/1601 | - |
dc.description.abstract | A general expression for the entropy E of a polarized brightness map B is obtained in terms of a general function f. An expression is also obtained for the gradient of E with respect to unmeasured Fourier coefficients of B, and it is shown that the map B-max which maximizes E is f-prime (B-max) bandlimited. Iterative numerical schemes to obtain B-max can be developed from these results as for the scalar brightness case. It is shown that if f-double prime is less than zero, then there is only one solution for B-max which maximizes E. This will lend robustness to numerical algorithms since convergence to the unique solution is assured. | en |
dc.format.extent | 363582 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | Springer-Verlag | en |
dc.relation.uri | http://adsabs.harvard.edu/cgi-bin/bib_query?1983A&A...118..194N | en |
dc.rights | (1983) by the European Southern Observatory. Scanned images provided by the NASA ADS. | en |
dc.subject | ASTRONOMICAL MAPS | en |
dc.subject | BRIGHTNESS DISTRIBUTION | en |
dc.subject | ENTROPY | en |
dc.subject | POLARIZED LIGHT | en |
dc.subject | SYNTHETIC APERTURES | en |
dc.subject | ALGORITHMS | en |
dc.subject | FOURIER TRANSFORMATION | en |
dc.subject | ITERATIVE SOLUTION | en |
dc.subject | MATRICES (MATHEMATICS) | en |
dc.title | Reconstruction of a polarized brightness distribution by the maximum entropy method | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
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1983 A&A V118 p194.pdf | 3p. | 355.06 kB | Adobe PDF | View/Open |
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