Indian astronomers look at Sun using sound, discover gravitational inner layer

Indian Astronomers discover gravitational inner layer. Know more…

Friday, 30th July 2021

The sun has always been the center of attention for astronomers seeking to explore the evolution of the cycle and prepare the world for its dangerous effects. Today, two Indian astronomers observed the internal rotation of the Sun using sound waves which reveal the existence of a gravitational layer.

This layer marks where the Sun's rotational shape changes dramatically, adding to the known phenomenon that the Sun's equator rotates faster than the poles. The layer known as the Near Surface Slice (NSSL) exists very close to the surface of the sun.

Indian astronomers find for the first time a theoretical explanation for its existence. In a study published in the journal Notices of the Royal Astronomical Society, researchers used helioseismology, a technique that uses sound waves to look inside the Sun.

They give an explanation of this class based on the thermal wind equilibrium equation which explains the small temperature difference between the solar poles and the equator, called thermal wind term, which is balanced by the centrifugal force The center occurs due to the difference in the sun's rotation.

Also Read: Indian astronomer, a member of the NASA team, detected radiation from the death of a star more than 5 billion years ago.

While most scientists believe that the condition is only true inside the Sun and that it is not near the Sun's surface, two researchers have shown the opposite, explaining that it is also near the surface.

Led by Bibhuti Kumar Jha, researcher at the Aryabhatta Research Institute of Observational Sciences (ARIES) and Professor Arnab Rai Choudhuri, from the Indian Institute of Science in Bangalore, the study relays the first signs of the existence of such a class has come more than half a century ago.

Understanding NSSL is important for the study of a number of solar phenomena such as sunspot formation and solar cycles, and it will also help to understand such phenomena in other stars, according to the study of astronomers. With the Sun's minimum, a period marked by the least Solar activity, ends, the Sun "wakes up" again.

The Sun recently erupted its largest eruption in more than 4 years that resulted in a blackout over the Atlantic Ocean. Sunspot AR2838 spewed out onto the sun's surface, causing the most powerful solar flare in four years, a class X1.5 explosion. The sunspot, now gone, appears on the northwest edge of the star.

The latest eruption marks the beginning of a new solar cycle, ionizing the top of Earth's atmosphere, causing a shortwave blackout over the Atlantic.

The News Talkie Bureau

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Indiatoday