Fast Holographic Deconvolution: a new technique for precision radio interferometry
Instrumentation and Methods for Astrophysics
2012-10-15 v1 Cosmology and Nongalactic Astrophysics
Abstract
We introduce the Fast Holographic Deconvolution method for analyzing interferometric radio data. Our new method is an extension of A-projection/software-holography/forward modeling analysis techniques and shares their precision deconvolution and widefield polarimetry, while being significantly faster than current implementations that use full direction-dependent antenna gains. Using data from the MWA 32 antenna prototype, we demonstrate the effectiveness and precision of our new algorithm. Fast Holographic Deconvolution may be particularly important for upcoming 21 cm cosmology observations of the Epoch of Reionization and Dark Energy where foreground subtraction is intimately related to the precision of the data reduction.
Keywords
Cite
@article{arxiv.1209.1653,
title = {Fast Holographic Deconvolution: a new technique for precision radio interferometry},
author = {Ian Sullivan and Miguel Morales and Bryna Hazelton and Wayne Arcus and David Barnes and Gianni Bernardi and Frank Briggs and Judd D. Bowman and John Bunton and Roger Cappallo and Brian Corey and Avinash Deshpande and Ludi deSouza and David Emrich and B. M. Gaensler and Robert Goeke and Lincoln Greenhill and David Herne and Jacqueline Hewitt and Melanie Johnston-Hollitt and David Kaplan and Justin Kasper and Barton Kincaid and Ronald Koenig and Eric Kratzenberg and Colin Lonsdale and Mervyn Lynch and Russell McWhirter and Daniel Mitchell and Edward Morgan and Divya Oberoi and Stephen Ord and Joseph Pathikulangara and Thiagaraj Prabu and Ron Remillard and Alan Rogers and Anish Roshi and Joseph Salah and Robert Sault and Udaya Shankar and K. Srivani and Jamie Stevens and Ravi Subrahmanyan and Steven Tingay and Randall Wayth and Mark Waterson and Rachel Webster and Alan Whitney and Andrew Williams and Chris Williams and Stuart Wyithe},
journal= {arXiv preprint arXiv:1209.1653},
year = {2012}
}
Comments
ApJ accepted