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Prospects for detecting the 21cm forest from the diffuse intergalactic medium with LOFAR
B. Ciardi, P. Labropoulos, A. Maselli +20
We discuss the feasibility of the detection of the 21cm forest in the diffuse IGM with the radio telescope LOFAR. The optical depth to the 21cm line has been derived using simulati…
The LOFAR radio environment
A. R. Offringa, A. G. de Bruyn, S. Zaroubi +93
Aims: This paper discusses the spectral occupancy for performing radio astronomy with the Low-Frequency Array (LOFAR), with a focus on imaging observations. Methods: We have analys…
Reionization and the Cosmic Dawn with the Square Kilometre Array
Garrelt Mellema, León Koopmans, Filipe Abdalla +25
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 21cm line from the earliest ph…
On the interpolation of calibration solutions obtained in radio interferometry
Sarod Yatawatta
Full polarimetric radio interferometric calibration is performed by estimating 2 by 2 Jones matrices representing instrumental and propagation effects. The solutions obtained in th…
Estimation of Radio Interferometer Beam Shapes Using Riemannian Optimization
Sarod Yatawatta
The knowledge of receiver beam shapes is essential for accurate radio interferometric imaging. Traditionally, this information is obtained by holographic techniques or by numerical…
LOFAR insights into the epoch of reionization from the cross power spectrum of 21cm emission and galaxies
R. P. C. Wiersma, B. Ciardi, R. M. Thomas +18
Using a combination of N-body simulations, semi-analytic models and radiative transfer calculations, we have estimated the theoretical cross power spectrum between galaxies and the…