Speaker
Description
LOFAR has proved to be one on the most successful SKA pathfinder in the
Northern emisphere opening up a poorly investigated radio window
providing observations with unprecedented sensitivity and resolution,
in particular with the addition of the International Stations.
During the past year the International LOFAR Telescope (ILT, aka
LOFAR-VLBI) data analysis has been greatly improved and refined
reaching sub-arcsec resolution imaging at 144 MHz with noise of a few tens of
microJy/beam (for an 8-hr observation) on a routine basis.
The improvement of about a factor of 20 in angular resolution (from
6" of LOFAR to 0".3 of ILT) is fundamental to study the bulk of radio
sources detected in the deep fields which are located at redshift
about or greater than 1 and, at the same time, to obtain images of
the lobes and hotspots of the brightest giant radio galaxies in the field
with unprecedented details at this frequency.
The LOFAR Deep Fields are a great opportunity to exploit the sub-arcsecond
resolution of the ILT since the main targets of these deep observations
are galaxies at z => 1 and the longer observations allow to reach
noise level around 10 microJy/beam.
In this talk I will present the results obtained from 72 hours of
observation centered on the Euclid Deep Field North (EDFN) in the
North Ecliptic Pole (NEP) region. In particular, I will show and
discuss some of the deepest ILT images (rms ~15 microJy/beam) obtained so
far of high-redshift radio galaxies and bright sub-mm sources in the
NEP region.
| Reasearch area | Extragalactic Continuum (galaxies/AGN, galaxy clusters) |
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