Note4Students

From UPSC perspective, the following things are important :

Prelims level: Solar Prominence

Mains level: Not Much

solar

Recently, the sun puzzled many scientists with a large prominence near its north pole.

What is Solar Prominence?

A solar prominence (also known as a filament when viewed against the solar disk) is a large, bright feature extending outward from the Sun’s surface.
Prominences are anchored to the Sun’s surface in the photosphere, and extend outwards into the Sun’s hot outer atmosphere, called the corona.
A prominence forms over timescales of about a day, and stable prominences may persist in the corona for several months, looping hundreds of thousands of miles into space.

How are they formed?

Scientists are still researching how and why prominences are formed.
The red-glowing looped material is plasma, a hot gas comprised of electrically charged hydrogen and helium.
The prominence plasma flows along a tangled and twisted structure of magnetic fields generated by the sun’s internal dynamo.
An erupting prominence occurs when such a structure becomes unstable and bursts outward, releasing the plasma.