Sentences with phrase «other black hole mergers»
Beginning with the discovery of the first binary black hole merger, christened GW150914, three other black hole mergers have been detected.
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Since then, the 1000 - member LIGO team has spotted two other black hole mergers, using its exquisitely sensitive L - shaped optical instruments called interferometers, which use lasers and mirrors to compare the stretching of space in one direction to that in the perpendicular direction.
Not exact matches
Other stellar explosions called gamma - ray bursts can also briefly outshine the stars, but the explosive black - hole merger sets a mind - bending record, says Kip Thorne, a gravitational theorist at Caltech who played a leading role in LIGO's development.
The other aspect is that space - time is incredibly stiff: that's why you need a cataclysmic event like the merger of two black holes to produce a distortion that we can measure.
He was also working on other LIGO papers at the time, including one about an earlier detection of a black - hole merger which now needed to be published before it could be eclipsed by the neutron - star merger announcement.
The likely scenario in which this could have happened is if the galaxy hosting the black hole experienced mergers or collisions with other galaxies through its evolutionary history.
A black - hole merger occurs when two black holes start to spiral towards each other, radiating energy as gravitational waves.
The two US detectors, one in Washington and the other in Louisiana, saw the signal of a black hole merger just a few milliseconds apart, but with just two detectors the location of the source couldn't be pinned down.
Other theories, like mergers of smaller black holes, remain viable, and researchers aren't quite sure yet how many black holes there really are in the early universe.
That growth should happen in part by mergers with other black holes and in part by accretion of material from the part of the galaxy that surrounds the black hole.
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.
This illustration shows the merger of two black holes and the gravitational waves that ripple outward as the black holes spiral toward each other.
A galactic bulge is thought to evolve through numerous mergers and collisions with other galaxies which would bring a large amount of interstellar materials (* 2) into a galactic center and further the evolution of a black hole.
For example, the team found that a merger of two black holes with significantly unequal masses would be a strong indication that the stars formed almost entirely from hydrogen and helium — called low - metallicity stars — with other elements contributing fewer than 0.1 percent of stellar matter (for comparison, this fraction is about 2 percent in our Sun).
Future observatories may one day be able to detect gravitational waves from supermassive black hole mergers and other higher - energy phenomenon.
If the signal LIGO had detected had been, say, neutron stars colliding and not black holes, we would have had no complaints, but there's probably a very good chance you could see neutron star mergers with other, conventional observational tools relying on light.