307 citations · 5.5k across the 80 of their papers we have counts for
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The spin temperature of high-redshift damped Lyman- systems
N. Kanekar, J. X. Prochaska, A. Smette +10
We report results from a programme aimed at investigating the temperature of neutral gas in high-redshift damped Lyman- absorbers (DLAs). This involved (1) HI 21cm absorption st…
LOFAR imaging capabilities and system sensitivity
R. J. Nijboer, M. Pandey-Pommier, A. G. de Bruyn
This document describes the general astronomical capabilities of the LOw Frequency ARray (LOFAR). The frequency range covered by LOFAR is split into two bands denoted as low band (…
The brightness and spatial distributions of terrestrial radio sources
A. R. Offringa, A. G. de Bruyn, S. Zaroubi +75
Faint undetected sources of radio-frequency interference (RFI) might become visible in long radio observations when they are consistently present over time. Thereby, they might obs…
Chromatic effects in the 21 cm global signal from the cosmic dawn
H. K. Vedantham, L. V. E. Koopmans, A. G. de Bruyn +3
The redshifted 21 cm brightness distribution from neutral hydrogen is a promising probe into the cosmic dark ages, cosmic dawn, and re-ionization. LOFAR's Low Band Antennas (LBA) m…
Probing reionization with LOFAR using 21-cm redshift space distortions
Hannes Jensen, Kanan K. Datta, Garrelt Mellema +24
One of the most promising ways to study the epoch of reionization (EoR) is through radio observations of the redshifted 21-cm line emission from neutral hydrogen. These observation…
Initial deep LOFAR observations of Epoch of Reionization windows: I. The North Celestial Pole
S. Yatawatta, A. G. de Bruyn, M. A. Brentjens +86
The aim of the LOFAR Epoch of Reionization (EoR) project is to detect the spectral fluctuations of the redshifted HI 21cm signal. This signal is weaker by several orders of magnitu…