I think it's safe to post this now that the Tau vs Raven Guard releases are out. It causes me emotional pain to depict Tau beating up Astartes.
A Sun Shark bomber is a T’au aircraft designed to provide atmospheric air support to ground-based Fire Caste forces. Each Sun Shark incorporates a Pulse Bomb Generator that takes up much of its dorsal fuselage. This advanced microfactory generates, and holds stable, a shimmering orb of lethal energy.