Speaker
Description
Feedback from black hole-powered jets has been invoked in many cosmological simulations to regulate star formation and quench galaxies. Despite this, observational evidence of how jets might be able to affect their hosts remains scarce, especially for low power jets in halos smaller than clusters. Recent observations of outflows around FR0 galaxies, that host compact radio-loud sources, imply that lower-power jetted active galactic nuclei (AGN) may have a significant impact on their hosts through jet interactions with the interstellar medium (ISM).
Using the Arepo code, we launch jets of low and intermediate power (10$^{38}$ — 10$^{43}$ erg s$^{-1}$) within a $\sim$kpc-scale periodic box with driven turbulence to study how the jets propagate through a turbulent ISM.
Our simulation results broadly fit into three different scenarios — jets penetrating easily through the ISM, becoming completely stalled, or the interesting intermediate stage, when jets are highly disturbed and redirected.
We suggest that low-power jets do not have enough ram pressure to affect the turbulent structure of the ISM. They can only fill pre-existing cavities that lead to asymmetric jet morphology. Low-power jets are able to drive outflows in a hot phase ($>10^{4.4}$ K). However, warm ($\sim\! 10^4$ K) ionized gas outflows appear under certain conditions.
