A speedy pixon image reconstruction algorithm

Details A speedy pixon image reconstruction algorithm A speedy pixon image reconstruction algorithm

1999-12-03

arxiv.org/abs/astro-ph/9912078v1

Mon.Not.Roy.Astron.Soc. 324 (2001) 108

Astronomy and Astrophysics

Astrophysics

12 pages, 5 figures, submitted to MNRAS

Scientific paper

A speedy pixon algorithm for image reconstruction is described. Two applications of the method to simulated astronomical data sets are also reported. In one case, galaxy clusters are extracted from multiwavelength microwave sky maps using the spectral dependence of the Sunyaev-Zel'dovich effect to distinguish them from the microwave background fluctuations and the instrumental noise. The second example involves the recovery of a sharply peaked emission profile, such as might be produced by a galaxy cluster observed in X-rays. These simulations show the ability of the technique both to detect sources in low signal-to-noise data and to deconvolve a telescope beam in order to recover the internal structure of a source.

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