D
Dominic Anstey
Researcher at University of Cambridge
Publications - 4
Citations - 62
Dominic Anstey is an academic researcher from University of Cambridge. The author has contributed to research in topics: Antenna (radio) & Dipole antenna. The author has an hindex of 2, co-authored 4 publications receiving 15 citations.
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A general Bayesian framework for foreground modelling and chromaticity correction for global 21 cm experiments
TL;DR: A new physics-motivated method of modelling the foregrounds of 21 cm experiments in order to fit the chromatic distortions as part of the foregrounding and it is demonstrated that fitting this model for varying N using a Bayesian nested sampling algorithm allows the 21 cm signal to be reliably detected in data of a relatively smooth conical log spiral antenna.
Journal ArticleDOI
Quantifying ionospheric effects on global 21-cm observations
TL;DR: In this paper, the two major layers of Earth's ionosphere, the F-layer and D-layer, were modelled by a simplified spatial model with temporal variance to study the chromatic ionospheric effects on global 21-cm observations.
Journal ArticleDOI
Informing antenna design for sky-averaged 21-cm experiments using a simulated Bayesian data analysis pipeline
TL;DR: In this paper, the authors demonstrate a method for guiding the antenna design of a global 21cm experiment through data analysis simulations, which is done by performing simulated observations for a range of inserted 21cm signals, then attempting to identify the signals with a data analysis pipeline.
Posted Content
Radio antenna design for sky-averaged 21 cm cosmology experiments: the REACH case
J. Cumner,E. de Lera Acedo,Dirk I. L. de Villiers,Dominic Anstey,C. I. Kolitsidas,B. Gurdon,Nicolas Fagnoni,Paul Alexander,Gianni Bernardi,H T J Bevins,S. H. Carey,Jean Cavillot,Riccardo Chiello,Christophe Craeye,W. Croukamp,John Ely,Anastasia Fialkov,T. Gessey-Jones,Quentin Gueuning,Will Handley,Richard Hills,Alec Josaitis,Girish Kulkarni,Alessio Magro,Roberto Maiolino,P. D. Meerburg,Shikhar Mittal,Jonathan R. Pritchard,E. Puchwein,Nima Razavi-Ghods,I.L.V. Roque,A. Saxena,K.H. Scheutwinkel,E. Shen,Peter Sims,Oleg Smirnov,M. Spinelli,Kristian Zarb-Adami +37 more
TL;DR: In this article, the authors discuss the design process used for global 21-cm experiments, focusing specifically on the Radio Experiment for the Analysis of Cosmic Hydrogen (REACH), and describe the antenna response to the sky signal to inform the critically important calibration during observation and data analysis.