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Pune telescope helps in mapping the distribution of atomic Hydrogen gas from the host galaxy of a F

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Pune telescope helps in mapping the distribution of atomic Hydrogen gas from the host galaxy of a F

  • Astronomers of National Centre of Radio Astrophysics (NCRA-TIFR) in Pune and the University of California in the U.S. have used the Giant Metrewave Radio Telescope (GMRT) to map the distribution of atomic hydrogen gas from the host galaxy of a fast radio burst (FRB) for the first time.

Fast radio bursts

  • These are extremely bright radio pulses from distant galaxies
  • These last for only a few milliseconds
  • They were first detected fifteen years ago and over a thousand have been found till now
  • But astronomical objects which can produce so much energy in so little time are still undiscovered

About recent findings

  • This exercise has revealed exciting clues about the origin of the burst.
  • The GMRT results indicate the FRB host galaxy has undergone a recent merger
  • The FRB progenitor is most likely a massive star formed due to this merger event.
  • This is the first case of direct evidence for a recent merger in an FRB host which is a major step towards understanding the progenitors of FRBs

About FRB (FRB20180916B)

  • It was the target fast radio burst (FRB) of the astronomers
  • It is one of the closest known FRBs and an ideal candidate to study the local burst environment.
  • It produces repeated, very short bursts
  • The bursts have been found to arise in the outskirts of a spiral galaxy half a billion light-years away.
  • It was traced by the Canadian Hydrogen Intensity Mapping experiment (CHIME)

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