Cronau radiation

Cronau radiation was radiation emitted by an object entering or leaving hyperspace along an axis perpendicular to the object's realspace vector. For a vessel with zero space velocity, the Cronau radiation would collapse into a narrow wave cone, which could be directed away from enemy sensors. This technique was used by New Republic stasis probes during the Black Fleet Crisis. Properly configured sensors could detect Cronau radiation from a ship emerging from hyperspace at greater range than would otherwise be possible, as in the case of Death Squadron's arrival at Hoth in 3 ABY.

Text and facts from the “Cronau radiation/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.