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Tiny flashes of radio light emanating from the sun discovered

  • IASbaba
  • June 10, 2020
  • 0
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Tiny flashes of radio light emanating from the sun discovered

Part of: GS-Prelims and GS-III – Space

In News:

  • A group of scientists working at the Pune-based National Centre for Radio Astrophysics (NCRA) have recently discovered tiny flashes of radio light emanating from all over the sun. 
  • These flashes could help in explaining the long-pending coronal heating problem.

Important value additions 

Coronal heating problem

  • The solar corona is the outer layer of the Sun’s atmosphere. 
  • It is composed of extremely high temperature gas, known as plasma
  • Its temperature could reach upto millions of degrees Celsius.
  • It is farthest from the core where the nuclear reactions powering the Sun occur. 
  • It would logically be expected to be the coolest part of the Sun. 
  • However, corona is 200 times hotter than the photosphere which is the layer beneath it.
  • This contradiction is dubbed as the coronal heating problem
  • It has puzzled astrophysicists ever since the temperature of the corona was first measured over 70 years ago.

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