Indian scientists along with the collaboration of other international scientists have measured the magnetic field of an eruption of the atmosphere of the Sun. They observed the weak thermal radio emission associated with the erupted plasma for the first time and offered a rare peek into the interior of the Sun.
The scientists study the solar Corona which provides detailed insights into the inner functions of the Sun. As we know the Sun is an extremely hot object, spewing out vast quantities of dangerous gas in many violent events and the corona has very high temperatures along with strong magnetic fields, and violent plasma eruptions.
These kinds of eruptions are Coronal Mass Ejections or CMEs, which is one of the most powerful explosions in our solar system.
It is predicted that if a strong CME blows and travels past the Earth, it has the potential to damage the electronics in our satellites and disrupt radio communication networks on Earth and so scientists study these events.
So the team of scientists from Indian Institute of Astrophysics (IIA) used data from their radio telescopes to measure the magnetic field and other physical conditions of the plasma in a CME detected on May 1, 2016. It was found that the Sun in extreme ultraviolet and white light was caught when the base of its activity was just behind the visible limb of the Sun.
A release from the Ministry of Science & Technology said, “This allowed the researchers to detect a much weaker radio emission called thermal (or blackbody) radiation from the plume of gas that was ejected in the CME. They were also able to measure the polarisation of this emission, which is indicative of the direction in which the electric and magnetic components of the waves oscillate. Using this data, they then calculated the physical properties of the ejected plasma as well” .
The detailed results of the research was done by R. Ramesh, A. Kumari, C. Kathiravan, D. Ketaki, T.J. Wang and have been published in the leading international journal Geophysical Research Letters.