Multi-Frequency Synthesis of VLBI Images Using a Generalized Maximum Entropy Method

Details Multi-Frequency Synthesis of VLBI Images Using a Generalized Maximum Entropy Method Multi-Frequency Synthesis of VLBI Images Using a Generalized Maximum Entropy Method

2008-10-18

arxiv.org/abs/0810.3304v1

Astron.Rep.52:951-962,2008

Astronomy and Astrophysics

Astrophysics

17 pages, 8 figures

Scientific paper

10.1134/S1063772908120019

A new multi-frequency synthesis algorithm for reconstructing images from multi-frequency VLBI data is proposed. The algorithm is based on a generalized maximum-entropy method, and makes it possible to derive an effective spectral correction for images over a broad frequency bandwidth, while simultaneously reconstructing the spectral-index distribution over the source. The results of numerical simulations demonstrating the capabilities of the algorithm are presented.

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