Coronal_Rain

Coronal rain

Coronal rain

Plasma falling to the Sun's photosphere

Coronal rain is a phenomenon that occurs in the Sun's corona when hot plasma cools and condenses in strong magnetic fields and falls to the photosphere. It is usually associated with active regions.[1][2][3][4][5][6] Coronal rain formed when impulsive heating from magnetic reconnection occurs.[7]

A movie of the coronal rain (right limb of sun) in the 304 Å wavelength. The footage in this video was collected by the Solar Dynamics Observatory's AIA instrument. SDO collected one frame every 12 seconds so each second in this video corresponds to 6 minutes of real time. The video covers 4:30 UTC on July 19th to 2:00 UTC on July 20th, a period of 21 hours and 30 minutes.

The material that makes up the coronal rain can be up to hundreds of times cooler than the surrounding environment.[8]

References

  1. [1]
    Jauregui, Andres (21 February 2013). "Coronal Rain: Solar Flare Rains Fire On Sun In NASA VIDEO". huffingtonpost.com. Retrieved 14 March 2014.
  2. [2]
    Grossman, Lisa. "Video: Coronal Rain Shower Caught on Sun". wired.com. Retrieved 14 March 2014.
  3. [3]
    "NASA Video Shows Stunning Coronal Rainstorm on Sun". voanews.com. Archived from the original on 14 March 2014. Retrieved 14 March 2014.
  4. [4]
    Shiga, David. "Sun's rain could explain why corona heat is insane". newscientist.com. Retrieved 14 March 2014.
  5. [5]
    O'NEILL, IAN. "The Sun's Coronal Rain Puzzle Solved". news.discovery.com. Retrieved 14 March 2014.
  6. [6]
    Antolin/Verwichte, P./ and E. (Erwin). "Transverse oscillations of loops with coronal rain observed by hinode/solar optical telescope". wrap.warwick.ac.uk. Archived from the original on 14 March 2014. Retrieved 14 March 2014.
  7. [7]
    Kohutova, P.; Verwichte, E.; Froment, C. (2019-10-01). "Formation of coronal rain triggered by impulsive heating associated with magnetic reconnection". Astronomy & Astrophysics. 630: A123. arXiv:1910.07746. doi:10.1051/0004-6361/201936253. ISSN 0004-6361.
  8. [8]
    Pastor, Adelina. "Coronal rain". European Solar Telescope. Retrieved 2024-05-17.


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This article uses material from the Wikipedia article Coronal_Rain, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.