For 10 points, name this phenomenon that is energy released from objects with mass.
This phenomenon can be treated as a matter field, which leads to the Isaacson tensor. Inspirals can form from this phenomenon and binary stars show this strongly. One failed attempt to detect this phenomenon was the Weber bar, which was a solid bar of metal, though that has been improved into the MiniGRAIL. It has been indirectly detected in the decreasing orbital period of the Hulse-Taylor binary pulsar. One experiment uses 3 satellites to create an equilateral triangle with sides of 5 million kilometers long. In addition to LISA, another attempt features an interferometer arm of 3,002 kilometers in the LIGO experiment. For 10 points, name this phenomenon that is energy released from objects with mass.
This phenomenon can be treated as a matter field, which leads to the Isaacson tensor.
{gravity waves} [accept {gravitational waves}]