Astronomers have seen for the first time the light from the collision of two black holes.
These objects met and merged over 7.5 billion light-years, orbiting a large body of hot, rotating matter, into a large, amazing black hole.
This vortex is called an accretion disk, and it rotates on the horizon of a black hole event. After this point, gravity is so strong that even light cannot escape.
That is why scientists have never seen two black holes collide. In the absence of light, they can only detect such an integration by detecting their gravitational waves.
Graph of a black hole correction disk
(ESO, ESA / Hubble, M. Kornsmer; Business Insider)
Above: An artist’s impression of a fast-moving supermassive black hole surrounded by an action disk. The main features of black holes are labeled red.
Albert Einstein had predicted this phenomenon earlier, but he did not think that gravitational waves would ever be detected. He looked very weak to lift on the ground in the midst of all the noise and vibration.
For 100 years, it has been clear that Einstein was right. But in 2015, a pair of machines in Washington and Louisiana detected their first gravitational waves: signs of two black holes meeting about 1.3 billion years away.
The discovery opened a new field of astronomy and won the Nobel Prize in Physics for researchers who helped conceive the project, called the Laser Interferometer Gravitational Wave Observatory (LIGO).
Now, for the first time, scientists have encountered a collision with a black hole that LIGO detected with a burst of light – something that previously seemed impossible, because black holes do not emit any light.
Above: An animation shows two black holes joining one or two large black holes.
Researchers believe that once the two black holes merged, the force of the collision sent the maintenance of the newly formed black hole around the large black hole through the gas of the accretion disk.
“It’s a gas reaction to a high-speed bullet that emits a bright flare through binoculars,” said Barry McCorn, an astronomer with the California Institute of Technology team. ”
The researchers published their findings in the journal Physical Examination Letters on Thursday. He expects another eruption from the same black hole in a few years, when he is expected to re-enter the mimicry black hole’s activation disc.
It helps a lot with astronomical physics and kinetology questions. If we can still do that and detect light from the integration of other black holes, then we can detect light. Holes’ homes can be nailed down, said study co-author Mansi Casleywall, an assistant professor of astronomy at Caltech.
There was an ‘amazing’ flare up with waves of gravity
Both LIGOs, which consist of two waves of gravity in the United States, as well as its Italian counterpart, Vergo, realized in May 2019 that space and time were constrained.
A few days later, telescopes at the Polymer Observatory near San Diego saw a bright glow of light coming from the same place in the universe.
When Caltech researchers looked back through archival footage of this region of the sky, they erupted. The light was slowly fading for a month. Timeline and location stand with LIGO observations.
Matthew Graham, a professor of astronomy at Caltech and lead author of the study, said in the release, “This huge black hole had been wandering for years before it suddenly erupted.”
The researchers, however, ruled out the possibility that the light came from routine explosions in the supermassive black hole’s accretion disk. This is because the disc was relatively calm for 15 years before the recent outbreak.
“Such massive black holes erupt all the time. They are not silent objects, but the timing, size and location of these eruptions were amazing,” said Casley Wall.
Imitation of neutron star integration
How to detect collisions with LIGO black holes
Both the LIGO Experiment and the Virgo have two 2.5 mile long (4 km long) weapons.
The detector shot the laser beam and split it in two. One of these split beams is sent down a 2.5 mile long tube, while the other goes straight down the tube.
The beam bounces off the mirror and then returns near the beam splitter. When all is left, the light waves return to equal lengths and line up in such a way that they cancel each other out.