How to Calculate the Magnetic and Electric Field

  • #1
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Main Question or Discussion Point

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]
 

Answers and Replies

  • #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].
 
  • #3
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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.
 
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  • #5
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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##
 
  • #6
UltrafastPED
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See footnote 2; but NASA is shutdown this week.
 
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