Fast radio burst (FRB)


  • Recently, astronomers have reported a fast radio burst (FRB) whose characteristics are different from almost all other FRBs previously detected, except one.

  • The scientists used the National Science Foundation’s Karl G Jansky Very Large Array (VLA) and other telescopes to study the object.

About Fast radio burst

  • FRBs are bright flashes of light that appear for a few milliseconds and then vanish. Since the first FRB was discovered in 2007, 140 more were discovered until June 2021. Fast radio burst (FRB)
  • Their origins are unknown, and their appearance is unpredictable.
  • FRB 20190520B, first discovered in 2019.
    • What makes it different is that unlike many other FRBs, it emits frequent, repeating bursts of radio waves.
  • And between bursts, it constantly emits weaker radio waves.
  • The detection and localization of the repeating FRB 190520B, which is co-located with a compact, persistent radio source and associated with a dwarf host galaxy of high specific-star-formation.
  • Only one FRB has been previously observed to behave this way. Called FRB 121102, that was discovered in 2012.


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