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Fast Holographic Deconvolution: A new technique for precision radio interferometry

Citation

Sullivan, IS and Morales, MF and Hazelton, BJ and Arcus, W and Barnes, D and Bernardi, G and Briggs, FH and Bowman, JD and Bunton, JD and Cappallo, RJ and Corey, BE and Deshpande, A and Desouza, L and Emrich, D and Gaensler, BM and Goeke, R and Greenhill, LJ and Herne, D and Hewitt, JN and Johnston-Hollitt, M and Kaplan, DL and Kasper, JC and Kincaid, BB and Koenig, R and Kratzenberg, E and Lonsdale, CJ and Lynch, MJ and McWhirter, SR and Mitchell, DA and Morgan, E and Oberoi, D and Ord, SM and Pathikulangara, J and Prabu, T and Remillard, RA and Rogers, AEE and Roshi, A and Salah, JE and Sault, RJ and Shankar, NU and Srivani, KS and Stevens, J and Subrahmanyan, R and Tingay, SJ and Wayth, RB and Waterson, M and Webster, RL and Whitney, AR and Williams, A and Williams, CL and Wyithe, JSB, Fast Holographic Deconvolution: A new technique for precision radio interferometry, Astrophysical Journal, 759, (1) Article 17. ISSN 0004-637X (2012) [Refereed Article]

Copyright Statement

Copyright 2012 The American Astronomical Society

DOI: doi:10.1088/0004-637X/759/1/17

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 wide-field 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 21cm cosmology observations of the Epoch of Reionization and Dark Energy where foreground subtraction is intimately related to the precision of the data reduction.

Item Details

Item Type:Refereed Article
Keywords:dark ages, reionization, first stars - techniques: image processing - techniques: interferometric
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:Astronomical and Space Instrumentation
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Stevens, J (Dr Jamie Stevens)
ID Code:83129
Year Published:2012
Web of Science® Times Cited:27
Deposited By:Mathematics and Physics
Deposited On:2013-03-01
Last Modified:2013-07-05
Downloads:0

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