The epoch of reionization

S Zaroubi - The first galaxies: theoretical predictions and …, 2012 - Springer
The Universe's dark ages end with the formation of the first generation of galaxies. These
objects start emitting ultraviolet radiation that carves out ionized regions around them. After a …

Reionization and the cosmic dawn with the square kilometre array

G Mellema, LVE Koopmans, FA Abdalla… - Experimental …, 2013 - Springer
Abstract The Square Kilometre Array (SKA) will have a low frequency component (SKA-low)
which has as one of its main science goals the study of the redshifted 21 cm line from the …

Initial deep LOFAR observations of epoch of reionization windows-I. The north celestial pole

S Yatawatta, AG De Bruyn, MA Brentjens… - Astronomy & …, 2013 - aanda.org
Aims. The aim of the LOFAR epoch of reionization (EoR) project is to detect the spectral
fluctuations of the redshifted HI 21 cm signal. This signal is weaker by several orders of …

Non-convex optimization for self-calibration of direction-dependent effects in radio interferometric imaging

A Repetti, J Birdi, A Dabbech… - Monthly Notices of the …, 2017 - academic.oup.com
Radio interferometric imaging aims to estimate an unknown sky intensity image from
degraded observations, acquired through an antenna array. In the theoretical case of a …

Robust calibration of radio interferometers in non-Gaussian environment

V Ollier, MN El Korso, R Boyer… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
The development of new phased-array systems in radio astronomy, as the low-frequency
array (LOFAR) and the square kilometre array (SKA), formed of a large number of small and …

MWA tied-array processing I: Calibration and beamformation

SM Ord, SE Tremblay, SJ McSweeney… - Publications of the …, 2019 - cambridge.org
The Murchison Widefield Array is a low-frequency Square Kilometre Array precursor located
at the Murchison Radio-astronomy Observatory in Western Australia. Primarily designed as …

Experimental characterization and multipath cluster modeling for 13–17 GHz indoor propagation channels

C Ling, X Yin, H Wang… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
The traffic explosion of mobile communications increasingly requires effective and realistic
fifth-generation (5G) channel models. Recently, we have conducted measurement …

GPU accelerated nonlinear optimization in radio interferometric calibration

S Yatawatta, S Kazemi, S Zaroubi - 2012 Innovative Parallel …, 2012 - ieeexplore.ieee.org
We present the GPU based acceleration of two well known nonlinear optimization routines:
Levenberg-Marquardt (LM) and Limited Memory Broyden-Fletcher-Goldfarb-Shanno …

[PDF][PDF] System design and wide-field imaging aspects of synthesis arrays with phased array stations

JD Bregman - PhD Thesis, 2012 - core.ac.uk
Addressing the Big Questions of astronomy will require (among other things) a new
generation of giant radio telescopes in the coming decades. Their antennas and receiving …

An empirical evaluation on the applicability of the DALiuGE execution framework

Y Mei, S Wei, F Wang, C Wu, R Tobar, M Shaikh… - Astronomy and …, 2022 - Elsevier
Abstract The Square Kilometre Array (SKA) project is an international cooperation project to
build the largest radio telescope worldwide. Data processing is one of the biggest …