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Scientists have identified two massive black holes on the verge of a catastrophic collision

NASA Scientists have identified two massive black holes with masses several hundred million times that of the Sun, which are on the verge of a catastrophic collision. At the heart of most galaxies are massive black holes millions to billions of times the mass of our Sun, and astronomers want to know more about how these giants formed. While researchers think that most of these supermassive black holes formed after at least one step of merging between two large black holes, experimental observations are rare, and so far only one pair of large-mass black holes have been discovered on the merger path.
  • How do forbidden black holes form?

A new study, however, may reverse this trend, as researchers observed a supermassive black hole 9 billion light-years away. A close companion black hole orbits it, and as the orbit shrinks, the two black holes collide and merge. Called "binary", these giant twins orbit each other about once every two years.

If the research team's calculations are correct, the binary circuit diameter is 10 to 100 times smaller. It is one of only two known major masses and will merge over the next 10,000 years or so. It may seem like a long time, but keep in mind that it takes a total of 100 million years for black holes of this size to start spinning around each other and eventually coming together. Therefore, this pair has traveled more than 99% of the collision path.

BingMag.com <b>Scientists</b> <b>have</b> <b>identified</b> <b>two</b> <b>massive</b> <b>black</b> <b>holes</b> on the <b>verge</b> of a <b>catastrophic</b> collision

two supermassive black holes orbiting each other
Credit: Caltech/R. Hurt (IPAC)

This new study was conducted by Joseph Lazio and Michele Vallisneri at NASA's Jet Propulsion Laboratory (JPL) Provided information on how large mass black holes behave in a binary system and how radio data is interpreted.

Preliminary evidence that this large mass black hole may have a companion was obtained using observations of radio telescopes on Earth. black holes do not emit light, but their gravity can accumulate increasing bubbles of hot gas around them, sending some material into space. Large jet output streams that can span millions of light-years.

A black hole output jet, if facing the ground, looks much brighter than a jet with a different direction. Astronomers call these black holes that erupt toward Earth "blazers," and in a recent study, researchers looked at a blazer called PKS 2131-021.

This The black hole is one of 1,800 blazers that a team of researchers at the California Institute of Technology (Caltech) monitored for 13 years with the Owens Valley Radio Observatory in northern California. But the PKS 2131-021 shows a strange behavior that caught the attention of scientists: its brightness has regular ups and downs that are as predictable as a clock tick.

BingMag.com <b>Scientists</b> <b>have</b> <b>identified</b> <b>two</b> <b>massive</b> <b>black</b> <b>holes</b> on the <b>verge</b> of a <b>catastrophic</b> collision

Incremental disk around the black hole and its outflow jet stream
Credit: Caltech/R. Hurt (IPAC)

They now think that this regular change is the result of the existence of a second black hole and the rotation of two black holes around each other. The mass of each of the two black holes in the PKS 2131-021 binary is estimated to be several hundred million times the mass of our Sun. To better confirm this finding, Scientists intend to detect the gravitational waves of this black hole system.

  • The information locked in the black holes can be detected by gravitational waves.

But before that, in order to confirm that these fluctuations were not accidental or due to temporary phenomena around the black hole, the research team, in addition to the Owens Valley Observatory data from 2008 to 2019, made other recorded observations. Scientists also examined the data of two other radio telescopes on the black hole, the University of Michigan Radio Observatory from 1980 to 2012 and the Hystek Observatory from 1975 to 1983, and found that these data Predictions of how the PKS 2131-021 blazer changes brightness over time. According to Lazio, this shows the importance of long-term research because it took 45 years of radio observation to reach such a conclusion. : Caltech/R. Hurt (IPAC)


Source: SciTechDaily

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