Landing page for project EP115

The high-redshift active galactic nucleus PMN J0909+0354 (z=3.28) has a puzzling X-ray structure observed with Chandra, with two arcsec-scale extended components, one on the north-northwestern (NNW) and one on the north-eastern (NE) side of the core. VLA radio images at multiple frequencies show a double structure with a compact core and a `hot spot' towards the NNW. At milli-arcsec scales, the NE orientation of the inner jet is hinted by a 5-GHz global VLBI image taken in the early 1990's. Since the restoring beam in that experiment was very elongated in the NNW direction, the details of the structure revealed should be treated with caution. Here we request a sensitive 6-h EVN observation at 5 GHz, providing a much better north--south resolution than the >25-yr old global VLBI experiment, to quantitatively characterize the pc-scale jet of J0909+0354. Together with the X-ray data, the new observations will be used to infer the physical parameters of the jet. If the mas-scale jet structure seen in 1992 is confirmed, the new image might also provide a second-epoch measurement for estimating the jet component speed.

This data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa. The EVN archive itself has the DOI https://doi.org/10.17616/R3Z197