Goldreich-Julian density
= Goldreich-Julian density
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The Goldreich-Julian density is the charge density needed to support corotation in an idealized pulsar magnetosphere. Where exterior currents vanish,
$$
\rho_{\rm GJ}=-\frac{\boldsymbol\Omega\mathbin\cdot\mathbf B}{2\pi c}
$$
in Gaussian units.
= Goldreich-Julian charge density
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