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Precision Calibration for HERA and 21 cm Cosmology

Published online by Cambridge University Press:  08 May 2018

Joshua S. Dillon Open the ORCID record for Joshua S. Dillon [Opens in a new window]
Joshua S. Dillon*
Affiliation:
NSF Astronomy and Astrophysics Postdoctoral Fellow, Department of Astronomy, University of California, Berkeley Berkeley, California, USA email: jsdillon@berkeley.edu
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Abstract

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Here I discuss progress in both the theory and practice of data analysis for the Hydrogen Epoch of Reionization Array (HERA), focusing on techniques to calibrate the instrumental response and preserve the spectral smoothness that is essential to separating the cosmological 21 cm signal from foregrounds that are five orders of magnitude brighter. I explain how mis-calibration can create ruinous spectral structure and how we take advantage of HERA’s highly-redundant configuration for calibration. This proceeding draws from a talk I gave on October 3, 2017. Slides for it and all my talks are available at joshdillon.net.

Keywords

cosmology: dark agesreionizationfirst stars – instrumentation: interferometers
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S333: Peering towards Cosmic Dawn , October 2017 , pp. 114 - 117
Copyright
Copyright © International Astronomical Union 2018 

References

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