Twice in Rogue One,
Only a single core of the Death Star is activated in order to wipe out large parts of planets without completely destroying them.
What's the radius of these explosions?
I'm going to take a stab at this through by inferring information through various canon sources.
According to this picture, the Dauntless appears to be about equal length of the city of Jedha. Maybe along the lines of 5996 meters as opposed to 7,000m
We could the infer that the circumference of the city had 18839 meters with an total area of 28236647.336836 m2
Now considering that Jedha was visible from the Holy City , The Catacombs of Cad era when we see this:
And then we see this!
Perhaps someone with some engineering background would be able to help me nail this one down. Thanks!