Intermediate-Mass Black Hole

  • IASbaba
  • September 14, 2020
  • 0
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Intermediate-Mass Black Hole

Part of: GS Prelims and GS-III – Space

In news

Key takeaways

  • These waves were a result of a collision between two black holes billions of years ago.
  • The signal has been named GW190521.
  • It likely represented the instant that the two black holes merged.
  • It lasted less than one-tenth of a second.
  • It was calculated to have come from roughly 17 billion light-years away.

Do you know?

  • Out of the two, the larger black hole was of 85 solar masses and the smaller black hole was of 66 solar masses
  • In the merger leading to the GW190521 signal, the larger black hole was well within the unexpected range, known as the pair-instability mass gap.
  • The researchers suggest that the larger 85-solar-mass black hole was not the product of a collapsing star but was itself the result of a previous merger.

Important value additions

About LIGO

  • It is a large scale physics experiment observatory established in 2002 to detect gravitational waves.
  • The present telescopes could detect objects which emit electromagnetic radiations like X-ray, gamma rays etc. However, merger of black holes and many other cataclysmic events do not emit electromagnetic waves rather gravitational waves.
  • Thus, LIGO was established to unfold the many unknown phenomenon in universe through the gravitational waves detection.
  • Indian participation in the LIGO Scientific Collaboration, was done under the umbrella Initiative –IndIGO, which is a consortium of Indian gravitational-wave physicists.

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