Bootstrap resampling as a tool for radio-interferometric imaging fidelity assessment

Details Bootstrap resampling as a tool for radio-interferometric imaging fidelity assessment Bootstrap resampling as a tool for radio-interferometric imaging fidelity assessment

2004-12-17

arxiv.org/abs/astro-ph/0412480v1

Astronomy and Astrophysics

Astrophysics

Accepted by AJ; 41 pages, 13 figures

Scientific paper

10.1086/428006

We report on a numerical evaluation of the statistical bootstrap as a technique for radio-interferometric imaging fidelity assessment. The development of a fidelity assessment technique is an important scientific prerequisite for automated pipeline reduction of data from modern radio interferometers. We evaluate the statistical performance of two bootstrap methods, the model-based bootstrap and subsample bootstrap, against a Monte Carlo parametric simulation, using interferometric polarization calibration and imaging as the representative problem under study. We find both statistical resampling techniques to be viable approaches to radio-interferometric imaging fidelity assessment which merit further investigation. We also report on the development and implementation of a new self-calibration algorithm for radio-interferometric polarimetry which makes no approximations for the polarization source model.

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