EG129
Looking for a kpc-scale separation dual AGN at z=4.11
The existence of dual supermassive black holes (SMBH) is a consequence of the hierarchical growth of galaxies. VLBI observations are unique tools to localise the AGN in merging systems with compact radio emission and to discriminate between star formation and AGN-related radio emission in cases where a claim of dual AGN has already been provided by observations conducted in other wavebands. Recent James Webb Space Telescope (JWST) observation of a radio galaxy at z=4.11 revealed the existence of two compact [NeV] emission line regions. which are typically associated with AGN owing to its extremely high ionization energy, at a separation of <10 kpc. With the proposed EVN observations, we want to localize the radio-emitting AGN in the system on mas scale, which than can be connected to (one of the) the JWST compact features. At 1.4 GHz, with the inclusion of GMRT, we want to map the jet structure as well. If both AGN are radio-emitting, EVN can reveal the first radio-emitting dual AGN above redshift 4.
Observation pages at the EVN archive:
Context for this dataThis 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