This presentation seeks to illustrate recent (and ongoing) e-MERLIN enhancements in imaging capabilities which are starting to be delivered from a combination of continued software developments and a funded programme of digital upgrades to the existing e-MERLIN hardware.
These enhancements are being rolled out and the presentation will illustrate how e-MERGE L-Band data taken between 2014...
Current cosmological controversies are coming down to the precision level of observations. Future wide-field surveys with the next generation of telescopes will open the so-called "era of precision cosmology", but that era has already started at the radio wavelengths with Very Long Baseline Interferometry (VLBI). The powerful combination of strong gravitational lensing and VLBI observations...
Strong gravitational lensing offers one of the cleanest means for measuring masses at cosmological distances. This allows to address important questions related to the efficiency of star formation in galaxies and the nature of dark matter. Optical surveys such as Euclid are expected to discover tens of thousands of galaxy-scale lenses, opening up the age of statistical strong lensing. However,...
Gravitational lensing provides a powerful tool for studying the nature of dark matter given its sensitivity to any mass along the lensing line of sight. Dark subhalos with no luminous stellar component cause astrometric and photometric anomalies, which can be observed given sufficient angular resolution. While these observations are possible with Very Long Baseline Interferometry (VLBI), the...
The cosmic radio dipole is an anisotropy in the number counts of radio sources with respect to the cosmic background. Results have shown a tension between the radio dipole and the dipole as measured from the cosmic microwave background (CMB), presenting an intriguing puzzle as to the cause of this discrepancy. With its high sensitivity and large field of view, each MeerKAT pointing can yield...
