LIGO gravitational-wave detectors
The AEI closely collaborates with the LIGO interferometric gravitational-wave detectors in the USA.
The AEI is part of the LIGO Scientific Collaboration (LSC). The AEI divisions of Bruce Allen and Alessandra Buonanno, as well as the GEO Collaboration have signed MOUs with the LIGO Scientific Collaboration. This international cooperation coordinates the efforts geared towards the first direct detection of gravitational waves by ground-based interferometric detectors. The Advanced LIGO detectors (aLIGO) come online in 2015-16.