Widespread AGN feedback in a forming brightest cluster galaxy at $z=4.1$ unveiled by JWST

Understand

We present rest-frame optical spectroscopy using JWST/NIRSpec IFU for the radio galaxy TN J1338-1942 at z=4.1, one of the most luminous galaxies in the early Universe with powerful extended radio jets.

• Previous observations showed evidence for strong, large-scale outflows on the basis of its large (~150 kpc) halo detected in Ly-alpha, and high velocity [O II] emission features detected in ground-based IFU data.
• Our NIRSpec/IFU observations spatially resolve the emission line properties across the host galaxy in great detail.
• We find at least five concentrations of line emission, coinciding with discrete continuum features previously detected in imaging from HST and JWST, over an extent of ~2'' (~15 kpc).