Conveners
VLBI
- Martin Hardcastle (University of Hertfordshire)
In the past few decades, radio surveys have provided us with unique insights into many areas of astrophysics such as star formation, supernovae, active galactic nuclei, pulsars, cosmology and much more. A key aspect of these surveys is the technique of Very Long Baseline Interferometry (VLBI) which can provide some of the highest resolutions possible in astronomy. This method has been crucial...
The LOw Frequency ARray (LOFAR) is one of the world's leading observatories at low radio frequencies. With its pan-European baselines reaching up to 2000 km in length, it is capable of achieving sub-arcsecond angular resolution at frequencies below 200 MHz. However, the use of its international baselines has been hindered for most of the current lifetime of the observatory, due to technical...
Recent technological developments have allowed radio surveys to go deeper than ever before. One such example is the International LOFAR Telescope (ILT). With the first data release of the LOFAR Two-meter Sky Survey (LoTSS) Deep Fields, we have access to 6” radio images at 144 MHz with sensitivities down to 20 μJy/beam, which was previously unprecedented at such low frequencies. This is just...
Blazars are highly studied sources, as their relativistic jet being beamed towards Earth results in the Doppler-boosting of their emission above what can be detected for other AGNs. This allows them to benefit from significant observational coverage at high energies and radio frequencies, where VLBI techniques can study the evolution of components within their relativistic jets.
In the...
