With reference to Primordial Black Holes (PBH), consider following statements

1. 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.
2. The recent study confirmed that this marginal rise in potential energy resulted in birth of several PBHs and also emitted very powerful gravitational waves.
3. They were formed during the Hot Big Bang phase.

Select the correct statement.

• A scientist duo from city-based Inter University Centre for Astronomy and Astrophysics (IUCAA), has studied primordial black holes that 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.
• Primordial Black Holes (PBH) were formed during the Hot Big Bang phase.
• 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.
• The study jointly, performed by cosmologists Varun Sahni and Swagat Mishra, has confirmed that this marginal rise in potential energy resulted in birth of several PBHs and also emitted very powerful gravitational waves.
• PBH can be massively large as 3000kms or be extremely tiny like nucleus of an atom.

By: Shubham Tiwari