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Solar Prominence


Scientists recently observed a large prominence near Sun’s north pole.


GS I: Geography

Dimensions of the Article:

  1. Solar Prominences
  2. Solar Filaments
  3. Coronal Mass Ejections (CMEs)

Solar Prominences:

  • Solar prominences are large, loop-like structures visible on the edge of the solar disk against the dark background of space.
  • They are anchored to the Sun’s surface in the photosphere and extend into the corona.
  • They are cooler and denser than the surrounding plasma in the Sun’s corona and are shaped by the Sun’s magnetic field.
  • Prominences can extend for thousands of kilometers and can last for several days or up to several months.
  • Some prominences erupt and give rise to coronal mass ejections (CMEs).

Solar Filaments:

  • Sometimes, prominences are observed against the bright background of the Sun instead of at the edge of the Sun’s disk.
  • These prominences appear dark compared to the bright background of the Sun and are called solar filaments.

Coronal Mass Ejections (CMEs):

  • CMEs are large expulsions of plasma and magnetic field from the Sun’s corona that propagate outward into interplanetary space.
  • A CME carries about a billion tons of material out from the Sun at speeds of hundreds of kilometers per second.
  • CMEs can cause geomagnetic storms on Earth, which can significantly impact both ground- and space-based technological systems.

-Source: The Hindu


December 2023