Coronal rain

Last updated
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.

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, most obviously in the aftermath of a solar flare. [1] [2] [3] [4] [5] [6] Coronal rain can also form after injection of material via impulsive heating anywhere in the solar atmosphere, for example in association with magnetic reconnection. [7]

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

References

  1. ↑ Jauregui, Andres (21 February 2013). "Coronal Rain: Solar Flare Rains Fire On Sun In NASA VIDEO". huffingtonpost.com. Retrieved 14 March 2014.
  2. ↑ Grossman, Lisa. "Video: Coronal Rain Shower Caught on Sun". wired.com. Retrieved 14 March 2014.
  3. ↑ "NASA Video Shows Stunning Coronal Rainstorm on Sun". Voice of America. 22 February 2013. Archived from the original on 14 March 2014. Retrieved 14 March 2014.
  4. ↑ Shiga, David. "Sun's rain could explain why corona heat is insane". newscientist.com. Retrieved 14 March 2014.
  5. ↑ O'NEILL, IAN. "The Sun's Coronal Rain Puzzle Solved". news.discovery.com. Retrieved 14 March 2014.
  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. ↑ 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 . Bibcode:2019A&A...630A.123K. doi:10.1051/0004-6361/201936253. ISSN   0004-6361.
  8. ↑ Pastor, Adelina. "Coronal rain". European Solar Telescope. Retrieved 2024-05-17.


This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.