Notices
Results 1 to 4 of 4

Thread: solar flares

  1. #1 solar flares 
    Moderator Moderator AlexP's Avatar
    Join Date
    Jul 2006
    Location
    NY
    Posts
    1,838
    Is the force of a solar flare enough to actually cause the Sun to move at all(even slightly)? and if it doesn't, where is the necessary 'equal and opposite force' exerted?


    "There is a kind of lazy pleasure in useless and out-of-the-way erudition." -Jorge Luis Borges
    Reply With Quote  
     

  2.  
     

  3. #2  
    Universal Mind John Galt's Avatar
    Join Date
    Jul 2005
    Posts
    14,168
    Logic suggests it must move it slightly, since to ever action there is an equal but opposite reaction. A brief google should reveal the average mass and velocity of a solar flare, and the mass of the sun. You could them compute the theoretical magnitude of the displacement.


    Reply With Quote  
     

  4. #3  
    Guest
    Mass of the sun = 1.9 * 10^30 kgs.
    Mass of a CME = 1.0*10^13 kgs. (This figure is for a rather large one).
    Ejection speed of CME = 1million MPH (approx)

    (I have used CME (Coronal Mass ejection) as opposed to a solar flare, because matter is ejected when a flare collapses).

    So the sun will move in the opposite direction at around 5*10^-12 MPH
    Thats near enough 8 millionths of a millimetre per hour!
    or 1 millimetre every 14 years!

    But remember they occur in all directions, with varying intensities and frequency so with the sun orbiting the galaxy, any flares have negligible effect.
    Reply With Quote  
     

  5. #4  
    Moderator Moderator AlexP's Avatar
    Join Date
    Jul 2006
    Location
    NY
    Posts
    1,838
    thanks for doing the math for me
    thanks for the replies
    "There is a kind of lazy pleasure in useless and out-of-the-way erudition." -Jorge Luis Borges
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •