A view of some 40 cMpc/h sub-regions centered at some massive halos (upper panels) and massive BHs (lower panels) in BlueTides simulation at z=6.5. The image shows the gas density field color coded by temperature.

A series of 4 cMpc/h sub-regions centered at some massive BHs in BlueTides simulation at z=6.5. The image shows the gas density field color coded by temperature. The BH sits at the center of the image (marked by the white cross).

The host galaxies of the 20 most massive BHs of BlueTides simulation at z=6.5. The image show a view of 20 ckpc/h region centered at the supermassive BHs. The left panel shows the galaxies in face-on direction, while the right panel shows the edge-on view of the galaxies.

A multi-field view of the largest halo in BlueTides. The left panel shows a 40 cMpc/h sub-region showing in turn the dark matter, gas temperature and the gas metallicity field. The right panel gives a zoom-in view of 4 cMpc/h sub-region to illustrate the detailed structures.

Illustration of the host environment of the four sample QSOs at z=7.0. The top panels give the gas density field color coded by temperature, in a view of 400 ckpc/h sub-region. Middle panels paint the stellar density field for the host galaxy (in face-on orientation) color coded by the age of stars. The bottom panels give the density field of the cold molecular gas surrounding the BHs, in contrast with the mean surface density of the host gas. The middle and bottom boxes are all shown in 30 ckpc/h per side.