| ▲ | gwerbin 3 hours ago | |
What are the "gridded" regions in the middle? Is that some kind of measurement artifact? | ||
| ▲ | epistasis 2 hours ago | parent [-] | |
If you're talking about the purple blotches, that's a map of the regions of the sky that have been targeted for observation. It's not the actual SMBH density. | ||