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Scientist Discovers New Gravitational Waves From Black Hole Collision by OlubamzNews: 7:42am On Nov 02, 2017 |
Scientists announced this week that they have once again
recorded gravitational waves, ripples in space-time, from a
pair of black holes colliding 1.8 billion light years away.
They recorded the event on August 14, the fourth time in
the past two years that astronomers have detected and
recorded such ripples from collisions of black holes. The
scientists made the announcement in a Physical Review
Letters paper, as well as at a G7 meeting of science
ministers in Turin, Italy.
The August collision involved a black hole with a mass of
about 31 times that of the Sun, and another with 25 solar
masses. Once the two crashed, they created a black hole
with a mass of 53 solar masses. In line with earlier
gravitational wave detections, the remaining three solar
masses transformed into the gravitational waves the
scientists detected. The August observations were the result
of Virgo’s August 1 debut, a new gravitational wave
detector in Italy built by the European Gravitational
Observatory.
Earlier detections of gravitational waves were made by
LIGO, a pair of L-shaped antennas in Louisiana and
Washington. Since LIGO first detected the waves in
February 2016 — confirming Albert Einstein’s prediction
and verifying the nature of black holes — the scientists
working with LIGO have been searching for more insights
into the universe. Although the newer Virgo antenna is
only one-fourth as sensitive as the LIGO antennas, the
network can now triangulate the sources of gravitational
waves, allowing optical telescopes to search for any
accompanying visible effects sparking in the night sky.
The astronomers will continue working to improve their
instruments until fall of 2018 when their next observation
run will begin. LIGO Scientific Collaboration spokesman
David Shoemaker told the New York Times : “This is just the
beginning of observations with the network enabled by
Virgo and LIGO working together. With the next observing
run planned for Fall 2018, we can expect such detections
weekly or even more often.”
www.olubamznews.com/2017/09/scientist-discover-new-gravitational.html?m=1 |
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