Astronomers from the Indian Institute of Astrophysics (IIA) Map the Differential Rotation of the Sun's Chromosphere Using 100 Years of Kodaikanal Data.

Science and Technology

Astronomers from Indian Institute of Astrophysics (IIA) mapped the Sun's differential rotation, revealing the equator rotates faster than poles, enhancing solar activity understanding.


      - The discovery was based on 100 years of daily records from Kodaikanal, Tamil Nadu (TN).

     

     

Main Points:-   (i) This study is the first to utilize chromospheric network cells for mapping the Sun's rotation across different latitudes.

      (ii) The analysis found that the Sun rotates fastest at the equator (13.98 degrees per day) and slows toward the poles (10.5 degrees per day at 80 degrees latitude).


About Indian Institute of Astrophysics (IIA),

Director: Annapurni Subramaniam
Founded: 1971
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