Journal article
The impact of realistic foreground and instrument models on 21 cm epoch of reionization experiments
A Nasirudin, SG Murray, CM Trott, B Greig, RC Joseph, C Power
Astrophysical Journal | IOP PUBLISHING LTD | Published : 2020
Abstract
Predictions for the ability of 21 cm interferometric experiments to discriminate Epoch of Reionization (EoR) signal models are typically limited by the simplicity of data models, whereby foreground signals and characteristics of the instrument are often simplified or neglected. To move toward more realistic scenarios, we explore the effects of applying more realistic foreground and instrument models to the 21 cm signal, as well as the ability to estimate astrophysical parameters with these additional complexities. We use a highly optimized version of 21cmFAST, integrated into 21cmMC, to generate lightcones of the brightness temperature fluctuation for Bayesian parameter estimation. We includ..
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Grants
Awarded by Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D)
Awarded by ARC
Awarded by Australian Research Council
Funding Acknowledgements
A.N. thanks R.J.J. Poulton and A. Bahramian for their contribution to this research. This work is supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. C.M.T. is supported by an ARC Future Fellowship through project number FT180100321. The International Centre for Radio Astronomy Research (ICRAR) is a Joint Venture of Curtin University and The University of Western Australia, funded by the Western Australian State government. We acknowledge that the results in this paper have been achieved by using resources provided by the Pawsey Supercomputing Centre, with funding from the Australian Government and the Government of Western Australia, as well as OzSTAR, funded by Swinburne University and the Australian Government's Education Investment Fund.