Gravitational wave sources
Not only merging black holes, but also neutron star pairs emit gravitational waves.
During collaborative measurement campaigns, so-called observation runs, the worldwide gravitational wave detector network listens for signals from space. During the third observation run “O3”, which started on April 1st, 2019, the LIGO detectors (USA), Virgo (Italy), and GEO600 (Germany) recorded a range of promising signals.
From the data of the first two observation runs of LIGO and Virgo, the scientists have created a first catalogue of cosmic collisions. The catalogue contains gravitational wave signals from ten pairs of merging black holes and one pair of neutron stars.
White Dwarf binaries, their properties, and the role they will play for the planned space-borne gravitational wave detector LISA.