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Title:
The effect of spatial coherence in interferometric measurements of radii
Authors:
James, Daniel F. V.
Affiliation:
AA(Rochester, University, NY)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 361, Oct. 1, 1990, p. 650-652. Research supported by NSF and U.S. Army. (ApJ Homepage)
Publication Date:
10/1990
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Interferometry, Interstellar Masers, Radii, Radio Sources (Astronomy), Astrometry, Coherent Radiation, Wave Equations
DOI:
10.1086/169227
Bibliographic Code:
1990ApJ...361..650J

Abstract

The correction to interferometric measurements of the radii of sources due to the possible high spatial coherence of the source, as might occur for example, in some masers, is estimated by introducing a heuristic model. The results suggest that the usual interpretation of such measurements might give an estimate of the size which is too small by the order of 10 percent.

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