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Cosmology with gravitationally lensed repeating Fast Radio Bursts
O. Wucknitz, L. G. Spitler, U. -L. Pen
High-precision cosmological probes have revealed a small but significant tension between the parameters measured with different techniques, among which there is one based on time d…
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…
Mid-infrared microlensing of accretion disc and dusty torus in quasars: effects on flux ratio anomalies
D. Sluse, M. Kishimoto, T. Anguita +2
Multiply-imaged quasars and AGNs observed in the mid-infrared (MIR) range are commonly assumed to be unaffected by the microlensing produced by the stars in their lensing galaxy. I…
First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256
R. J. van Weeren, H. J. A. Rottgering, D. A. Rafferty +79
Abell 2256 is one of the best known examples of a galaxy cluster hosting large-scale diffuse radio emission that is unrelated to individual galaxies. It contains both a giant radio…
Long term Arecibo monitoring of the water megamaser in MG J0414+0534
P. Castangia, M. C. V. Impellizzeri, J. P. McKean +4
We monitored the 22 GHz maser line in the lensed quasar MG J0414+0534 at z=2.64 with the 300-m Arecibo telescope for almost two years to detect possible additional maser components…
LOFAR: Recent imaging results & future prospects
George Heald, Michael R. Bell, Andreas Horneffer +27
The Low Frequency Array (LOFAR) is under construction in the Netherlands and in several surrounding European countries. In this contribution, we describe the layout and design of t…