A new approach to multi-frequency synthesis in radio interferometry
Instrumentation and Methods for Astrophysics
2015-09-16 v1
Abstract
We present a new approach to multi-frequency synthesis in radio astronomy. Using Bayesian inference techniques, the new technique estimates the sky brightness and the spectral index simultaneously. In principle, the bandwidth of a wide-band observation can be fully exploited for sensitivity and resolution, currently only limited by higher order effects like spectral curvature. Employing this new approach, we further present a multi-frequency extension to the imaging algorithm RESOLVE. In simulations, this new algorithm outperforms current multi-frequency imaging techniques like MS-MF-CLEAN.
Cite
@article{arxiv.1401.4711,
title = {A new approach to multi-frequency synthesis in radio interferometry},
author = {H. Junklewitz and M. A. Bell and T. Enßlin},
journal= {arXiv preprint arXiv:1401.4711},
year = {2015}
}
Comments
13 pages, 5 fugures, submitted to Astronomy and Astrophysics