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CHIME telescope

  • Category
    Science & Technology
  • Published
    21st Jun, 2021

Canadian Hydrogen Intensity Mapping Experiment (CHIME) have assembled the largest collection of fast radio bursts (FRBs).

Context

Canadian Hydrogen Intensity Mapping Experiment (CHIME) have assembled the largest collection of fast radio bursts (FRBs).

  • Researchers at the Pune-based Tata Institute for Fundamental Research (TIFR) and the National Centre for Radio Astrophysics (NCRA) achieved it.

About

About CHIME

  • Stationary: It is a novel radio telescope that has no moving parts.
    • It is located in British Columbia, Canada.
  • First exploration: The telescope has detected more than 500 new fast radio bursts in its first year of operation itself, between 2018 and 2019.
  • Tasks: It was originally conceived to map the most abundant element in the universe, that is Hydrogen.
    • CHIME has also discovered new "Fast Radio Bursts" and for monitoring many pulsars on a daily basis.
  • Working: This telescope is optimized to have a high "mapping speed", which requires a large instantaneous field of view (~200 square degrees) and broad frequency coverage (400-800 MHz).
  • The digitized signals collected by CHIME will be processed to form a 3-dimensional map of hydrogen density, which will be used to measure the expansion history of the universe.

What are fast radio burst (FRB)?

  • The first FRB was spotted in 2007.
  • fast radio burst (FRB) is a transient radio pulse of electromagnetic spectrum.
  • It blazes out from a fraction of a millisecond to a few milliseconds.
  • It is caused by some high-energy astrophysical process not yet understood.
  • Most FRBs are extragalactic.
  • The first Milky Way FRB was detected by the CHIME radio telescope in April 2020.
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