[HN Gopher] Magnetic waves explain mystery of Sun's outer layer
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       Magnetic waves explain mystery of Sun's outer layer
        
       Author : dnetesn
       Score  : 37 points
       Date   : 2021-01-24 11:43 UTC (11 hours ago)
        
 (HTM) web link (phys.org)
 (TXT) w3m dump (phys.org)
        
       | zyxzevn wrote:
       | I think is Electromagnetic waves, not magnetic waves. They always
       | come together. Or do I have to burn my fundamental physics book?
        
         | jackhalford wrote:
         | The term magnetic wave, in this article, refers to Alfven waves
         | [1], a phenomenon arising with the movement of electrically
         | conducting fluids, like the ions in our sun.
         | 
         | [1] https://en.m.wikipedia.org/wiki/Alfven_wave
        
       | superkuh wrote:
       | If anyone is interested in a more technical and in-depth review
       | of energy release mechanism theories in the solar corona check
       | out https://www.youtube.com/watch?v=v1AFnL6VARI "Solar Flares -
       | How the sun relaxes" at the harvard and smithsonian center for
       | astrophysics colloquium.
       | 
       | It goes into much more detail and explains much clearer the
       | evidence for magnetohydrodynamic waves as the energy carrier and
       | why it's probably not (exclusively or mostly) electron beams.
       | tldr; doing the numbers, every single electron in the entire
       | hemisphere of the corona above a flare site would have to beam
       | down than return in order for it to work out. It's gotta be
       | magnetohydrodynamic waves.
        
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       (page generated 2021-01-24 23:01 UTC)