Tiny flashes of radio light emanating from the sun discovered
Part of: GS-Prelims and GS-III – Space
- 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.