Gravitational waves pass through the huge ripples of space-time structures, and on August 14, 2019, a gravitational wave passed across the Earth. The U.S. and Italian precision-spinner lasers detected this wave, and it was striking, hinting at something unprecedented: black holes hitting neutron stars.
The signal is one of the strongest ever seen by scientists at the Laser Interferometer Gravitational Wave Observatory and the Italian Chamber of Motion Stakes. An instant alarm was raised when the detection was detected, and teams of astronomers around the world turned the telescope to a point where gravitational waves emitted in space. But their search came to nothing. No light, no X-rays, no infrared, no gamma rays. The event is inexplicable. When scientists began to study the data carefully, it became more puzzling. On Tuesday, researchers from LIGO and Virgo detailed their full analysis of the gravitational wave, known as GW190814, in the Astrophysical Journal Newsletter. This is the first detailed study of the collision of the epic universe, and it will only deepen the mystery.
“I think GW190814 was the first time we’ve observed gravitational waves, and the sources of them are really inexplicable, and I’ve worked at LIGO for over 10 years, and it’s definitely one of the most exciting events we’ve seen,” said Rory Smith, an astrophysicist at Monash University in Australia. “The key to the study is two LIGO facilities and Virgo facilities capable of detecting gravitational waves. Extreme objects such as black holes and neutron stars emit waves in the universe when they collide. These facilities are essentially listening to the sounds of giant cosmic giants colliding with each other and then understanding their physical characteristics.
Smith and his colleagues have been working on supercomputers to simulate these types of collisions, which helps perform this reverse calculation and can infer what objects are, what they may be and where they are. Using fancy parallelization algorithms, they can run analysis on a cluster of supercomputers with many hundreds, or thousands of independent computers, which would take about 50 to 100 years to run the same analysis on your laptop.
Observations show that two objects in GW190814 collided in a corner of space 800 million light-years away. This is definitely a black hole for half of the celestial bodies, about 23 times larger than our sun. But its dance partner is mysterious, and the mass of another object is only about 2.6 times that of our sun, which puts it in a strange position. It may be a neutron star, but it may also be a black hole, but it is difficult to explain how a black hole or neutron star can be around 2.6 solar masses. Scientists have never detected such a light black hole, and neutron stars are not expected to be so heavy, and when they become too big, they collapse into black holes. Therefore, this mysterious object appears to be some kind of object that is not in line with our current understanding. Whatever the outcome, it will rewrite our understanding of one of these two extreme objects.