A Star Pulse Generator is a Necron starship weapon system only found mounted on Cairn-class Tomb Ships and Scythe-class Harvest Ships. A Star Pulse Generator sends out a massive pulse of energy when activated.
Whilst other Necron ships are shielded from this attack, enemy vessels within the field of force’s radius are usually severely damaged, if not destroyed outright, by the immense energies released from this weapon.
- Battlefleet Gothic Armada, pg. 73