Gamma Ray Burst (GRB) with Kilonova

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Gamma Ray Burst (GRB) with Kilonova

  • Recently astronomers have recorded an event of a binary merger emitting a long, gamma ray burst (GRB) conjugated with a kilonova emission.
  • This is the first discovery of its kind. It was also scientifically accepted or confirmed by India’s largest optical telescope, Devasthal Optical Telescope (DOT).
  • Traditionally, a kilonova is associated with a short GRB. It is emitted when two dense objects such as a binary neutron star or a neutron star and a black hole collide.

Gamma-Ray Bursts– GRB

  • Gamma ray bursts (GRBs) are luminous high-energy radiation produced by energetic cosmic explosions. GRBs are divided into two main categories.
  • These are the most powerful phenomena in the universe, which can be detected even from a distance of billions of light-years.
  • Long GRBs: These are produced by the formation of black holes in the centers of disintegrating massive stars. They are bursts for 2 seconds or more.
  • When a star much more massive than the Sun runs out of fuel, its central part (core) suddenly collapses and becomes a black hole.
  • Black holes are holes in space where the force of gravity is so strong that light cannot pass through.

Short GRBs: These are produced due to the merger of dense objects like neutron stars. Their time is less than 2 seconds. A neutron star is the last possible evolutionary stage of high-mass stars.

Source – The Hindu

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