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How to Calculate the Magnetic and Electric Field

  1. Oct 8, 2013 #1
    Could someone show me a real world example of how to calculate the Magnetic and Electric Field around the Sun or a Planet.
    [tex]\vec{B} = \nabla * \vec{A} = (B_x, B_y,B_z)[/tex]
    [tex]\vec{E} = -\nabla*\phi-\frac{\partial \vec{A}}{\partial t} = (E_x,E_y,E_z)[/tex]
     
  2. jcsd
  3. Oct 8, 2013 #2

    UltrafastPED

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    For these equations you must first know the value of the vector potential, [tex] \vec{A}[/tex], and the electric potential, [tex]\phi[/tex].
     
  4. Oct 10, 2013 #3
    How do you solve for ##\vec{A}## and ##\phi## for a planet or star acting like a dipole or current loop? For the sun the equations only are valid every 11 years or so because the polarity reverses. Also the earth does not have a true North North Pole it is somewhere in Siberia.
     
    Last edited: Oct 10, 2013
  5. Oct 10, 2013 #4

    UltrafastPED

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  6. Oct 10, 2013 #5
    Does anyone know where there is a list by date of Gaussian coefficients from the IAGA and IGRF(more recent then 2000).
    They look like this ##g^m_n## and ##h^m_n##
     
  7. Oct 10, 2013 #6

    UltrafastPED

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    See footnote 2; but NASA is shutdown this week.
     
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