LIGO, VIRGO track gravitational waves from new black hole collision | Science News


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Trio of detectors tracks gravitational waves to their home

In their first joint venture, LIGO and Virgo team up to capture the latest collision of black holes

2:26pm, September 27, 2017
simulated spiraling black holes

WAVE HELLO  Gravitational waves have been traced closer to their origins than ever before. Emitted when two black holes spiraled inward and crashed together (simulation shown), the ripples were detected by the LIGO and Virgo detectors on August 14.

The gravitational wave paparazzi have tracked down the cosmic neighborhood of two merging black holes. Scientists pinpointed the region in the sky where the two black holes violently melded and kicked up swirls of the spacetime ripples, locating their stomping grounds more precisely than ever before.

Researchers from LIGO — the Advanced Laser Interferometer Gravitational-Wave Observatory — and its sister experiment, Advanced Virgo, spotted the ripples on August 14. The team announced the finding September 27 at a news conference at a meeting of the G7 science ministers in Turin, Italy, and in a paper accepted in Physical Review Letters.

It’s the first gravitational wave sighting to be made with three detectors: LIGO’s two detectors (in Livingston, La., and Hanford, Wash.) and Virgo’s detector near Pisa, Italy. “The three-detector

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