When activated, the Gravity Pulse allows an Obelisk to manipulate the energies of a minute gravitic singularity contained within it to produce an expanding wall of earth-shakingly powerful force.
If an enemy aircraft is hit by this sphere of gravitic force, it inevitably is smashed aside and severely damaged, often being turned into a plummeting wreck as the pilot loses control of his aircraft.
- Apocalypse (6th Edition), pg. 172
- Codex: Necrons (7th Edition) (Digital Edition), pg. 181