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Redundant Calibration: breaking the constraints of limited sky information

Published online by Cambridge University Press:  08 May 2018

Ronniy C. Joseph Open the ORCID record for Ronniy C. Joseph [Opens in a new window]
Ronniy C. Joseph*
Affiliation:
International Centre for Radio Astronomy Research, Curtin University, Bentley, WA 6102, Australia. email: ronniy.joseph@icrar.org ARC Centre of Excellence for All-sky Astrophysics (CAASTRO), Redfern, NSW, Australia ARC Centre of Excellence for All Sky Astrophysics in 3D (ASTRO 3D), Perth, WA 6845
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Abstract

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The latest generation of low frequency radio interferometers, e.g. LOFAR, MWA, PAPER, has been pushing down the detection limits on the hydrogen signal from the Epoch of Reionisation. However, due to the challenges posed by foregrounds and instrumental systematics the signal has eluded detection thus far. To overcome these challenges we require a detailed understanding of the calibration of these relatively new telescopes. This led to a renewed interest in redundant calibration. Classical calibration schemes depend on sky models based on limited knowledge of the low frequency sky. Redundant calibration, however, allows us to escape our ignorance as it is sky model independent. We will review the field of redundant calibration, and present work we have undertaken to understand the limitations of this calibration method.

Keywords

instrumentation: interferometersmethods: numerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S333: Peering towards Cosmic Dawn , October 2017 , pp. 118 - 121
Copyright
Copyright © International Astronomical Union 2018 

References

Ali, Z. S., et al. 2015, The Astrophysical Journal, IOP Publishings, 809, 61CrossRefGoogle Scholar
Dillon, J. S., & Parsons, A. R., 2016, The Astrophysical Journal, IOP Publishings, 826, 181Google Scholar
Grobler, T. L., et al. 2014, Monthly Notices of the Royal Astronomical Society, Oxford University Press, 439, 4030–4047Google Scholar
Liu, A., et al. 2010, Monthly Notices of the Royal Astronomical Society, Oxford University Press, 408, 1029–1050Google Scholar
Noorishad, P., et al. 2012, Astronomy & Astrophysics, EDP Sciences, 545, A108Google Scholar
Marthi, V. R. & Chengalur, J. 2013, Monthly Notices of the Royal Astronomical Society, Oxford University Press, 437, 524–531Google Scholar
Parsons, A. R. et al. 2010, The Astronomical Journal, IOP Publishings, 139, 1468–1480Google Scholar
Sievers, J. L. 2017, arXiv:1701.01860Google Scholar
Tingay, S. J. et al. 2013, Publications of the Astronomical Society of Australia, Cambridge University Press, 30Google Scholar
Wieringa, M. H., 1992, Experimental Astronomy, Springer Nature, 2, 203–225Google Scholar
Wijnholds, S. J., et al. 1992, Monthly Notices of the Royal Astronomical Society, Oxford University Press, 457, 2331–2354CrossRefGoogle Scholar
Zheng, H. et al. 2014, Monthly Notices of the Royal Astronomical Society, Oxford University Press, 445, 1084–1103Google Scholar