TNPSC Thervupettagam

Primordial Black Holes (PBH)

April 16 , 2020 1687 days 904 0
  • A recent study on Primordial black holes has confirmed that the marginal rise in potential energy resulted in birth of several PBHs and also emitted very powerful gravitational waves.
  • Primordial Black Holes (PBH) were formed during the Hot Big Bang phase.
  • PBH can be massively large as 3000 kms or be extremely tiny like nucleus of an atom.
  • It is believed that they are formed as a result of collapsing radiations as opposed to the collapse of massive stars, which is the case of any other black holes.
  • Primordial black holes were born as a result of a tiny bump in the potential energy levels of the universe, at a time when it was expanding rapidly.
  • After big bang the universe had expanded to nearly 10^27 times its original size.
  • It occurred within just fraction of a second by the time Cosmic Inflation phase concluded.
  • Thereafter, the remnant energy possessed by gravitational force got converted mainly into photons (light) in addition to protons, electrons, neutrons and other particles.
  • As the universe continued to grow exponentially during the Cosmic Inflation phase, it was sent across tiny quantum jitters.
  • These fluctuations, released in a specific fashion, when sufficiently large, slowly give birth to galaxies and stars and there is a bump in energy.
  • Among those that were significantly large, helped form PBHs.
  • The bump in energy then produces PBHs besides triggering very strong gravitational waves.

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