«To make this fantastic milestone possible took a global collaboration of scientists — laser and suspension technology developed for our GEO600 detector was used to help make Advanced LIGO the most sophisticated gravitational
wave detector ever created,» says Sheila Rowan, professor of physics and astronomy at the University of Glasgow.
Not exact matches
The latest gravitational
wave sighting, made on August 14, showed up in all three
detectors almost simultaneously, which allowed scientists to pinpoint the region of space in which the black holes resided more precisely than
ever before (SN Online: 9/27/17).
But its announcement was delayed due to the time required to understand two other discoveries: a LIGO - Virgo three -
detector observation of gravitational
waves from another binary black hole merger on August 14, and the first -
ever detection of a binary neutron star merger in light and gravitational
waves on August 17.
Beginning in autumn 2018 Virgo will use the squeezed - light source to listen to Einstein's gravitational
waves together with the worldwide network of
detectors with higher sensitivity than
ever before.
A
wave that passes through a LIGO
detector — and «passes through» is a fairly apt description, because gravitational
waves do not interact meaningfully with matter — will lengthen space - time
ever so slightly along one arm of the «L,» and compress it along the other arm.