Jet-induced star formation in gas-rich galaxies

摘要: Feedback from active galactic nuclei (AGN) has become a major component in simulations of galaxy evolution, particular for massive galaxies. AGN jets have been shown to provide large amount energy and are capable quenching cooling flows. Their impact on the host galaxy, however, is still not understood. Subgrid models activity evolution context so far mostly focused star formation. To shed more light actual physics ‘radio mode' part activity, we performed interaction powerful jet with gaseous disc () high-redshift galaxy. We spatially resolve both clumpy, multi-phase interstellar medium (ISM) include an explicit formation model simulation. Following system over than 107 yr, find that excavates central region, but overall causes significant change shape density probability distribution function hence rate due blast wave strong compression ISM. This results ring- or disc-shaped population young stars. At later times, increase also occurs regions further out since cocoon pressurizes The total mass additionally formed stars may be up one duty cycle. discuss details this jet-induced (positive feedback) its potential consequences observable signatures.