78 citations · 236 across the 6 of their papers we have counts for
9 papers
Measuring HERA's primary beam in-situ: methodology and first results
Chuneeta D. Nunhokee, Aaron R. Parsons, Nicholas S. Kern +64
The central challenge in 21~cm cosmology is isolating the cosmological signal from bright foregrounds. Many separation techniques rely on the accurate knowledge of the sky and the…
A beamforming approach to the self-calibration of phased arrays
Quentin Gueuning, Antony Brown, Christophe Craeye +1
In this paper, we propose a beamforming method for the calibration of the direction-independent gain of the analog chains of aperture arrays. The gain estimates are obtained by cro…
Foreground modelling via Gaussian process regression: an application to HERA data
Abhik Ghosh, Florent Mertens, Gianni Bernardi +70
The key challenge in the observation of the redshifted 21-cm signal from cosmic reionization is its separation from the much brighter foreground emission. Such separation relies on…
SKA1-LOW Antenna Design Document
Eloy de Lera Acedo, Hardie Pienaar
This document was submitted as part of the SKA Low Frequency Aperture Array Critical Design Review describing the electromagnetic design of the SKA1-LOW antenna that took place bet…
On-sky calibration of a SKA1-low station in the presence of mutual coupling
Josef Borg, Alessio Magro, Kristian Zarb Adami +3
This paper deals with the calibration of the analogue chains of a Square Kilometre Array (SKA) phased aperture array station, using embedded element patterns (one per antenna in th…
Mitigating Internal Instrument Coupling II: A Method Demonstration with the Hydrogen Epoch of Reionization Array
Nicholas S. Kern, Aaron R. Parsons, Joshua S. Dillon +63
We present a study of internal reflection and cross coupling systematics in Phase I of the Hydrogen Epoch of Reionization Array (HERA). In a companion paper, we outlined the mathem…