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arXiv · 1401.4711

A new approach to multi-frequency synthesis in radio interferometry

H. Junklewitz·M. A. Bell·T. Enßlin
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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.

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H. Junklewitz, M. A. Bell, T. Enßlin. 2014-01-19. A new approach to multi-frequency synthesis in radio interferometry. https://doi.org/10.1051/0004-6361/201423465

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