Landing page for project GM081

The active galactic nuclei (AGN) are believed to starve the host galaxy of the fuel needed to form stars. Numerical simulations suggest that radio jets can couple strongly with the interstellar medium (ISM) and deposit jet-driven momentum into cold gas, providing negative feedback. This impact is believed to depend on the radio power, and distribution and morphology of the ambient gas. To test these predictions and quantify radio AGN feedback, cold gas in the nuclear region of radio galaxies should be studied at high spatial resolution and over a range of radio powers. We propose to carry out this study via HI absorption for five radio sources whose low spatial resolution HI absorption spectra show the presence of disturbed gas, most likely in the nuclear region. Our sources have 1.4GHz radio power < 10^{24.5} W/Hz, lower than most of the sources studied for jet-ISM interaction. This will be an extension of our earlier studies of powerful radio sources to lower power sources that dominate the radio AGN population. With the proposed observations we will test the predictions of models of jet-ISM interaction and provide inputs on energetics, time and spatial scales involved.

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