Astrophysics (index)about


(explosive event larger than a nova and smaller than a supernova)

A kilonova (or macronova) is an astronomical flash of EMR corresponding to an explosion more energetic than an "ordinary" nova but less than a supernova. It stems from the collision of two dense bodies. Typically it is 1000 times brighter than a nova but a tenth or a hundredth of a supernova.

Much of the EMR from a kilonova is thought to occur in the infrared, making OIR observation useful.

GW170817 is classified as a kilonova, confirming the theory that neutron star mergers produce them. The transient faded more rapidly than a supernova.

(stars,event type,transient type,neutron stars,mergers)

Referenced by:
transient astronomy