Landing page for project EM181

The role of radio AGN in shaping the evolution of their host galaxies is yet to be well understood. To obtain a complete picture of the impact of the radio jets, we need to study, in detail, the kinematics and physical condition of the multi-phase ISM interacting with the jets and also the nature of the shocks that the radio jets drive into the gas. We propose sensitive polarisation observations of a 5000-year-old, 140pc sized radio source, 4C31.04 that is interacting strongly with its ambient ISM. Our global VLBI HI study showed the presence of jet-driven cold gas outflow and highly turbulent circumnuclear gas. We now propose to follow this up by studying the nature of shocks and the magnetic fields generated due to this jet-ISM interaction. Unresolved polarisation is already detected from this source with the VLA. We now aim to localise the polarisation and study the nature of magnetic fields, the jet-driven shocks and the properties of the Faraday screen. This study will also provide significant inputs to simulations of jets interacting with the ISM and help understand the role of magnetic fields, in general, in such processes.

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