- Conference date: 12–14 March 2008
- Location: Tsukuba (Japan)
We propose a numerical scheme to solve the Grad‐Shafranov equation describing the stationary, axisymmetric and force‐free electromagnetic field in the black‐hole spacetime. In accordance with this numerical scheme, we try to construct the Blandford‐Znajek monopole solution as a test simulation. The discrepancy between the Blandford‐Znajek monopole solution and our numerical solution is not so small in domain far from the black hole. This implies that the validity of the slow‐rotation approximation adopted in the Blandford‐Znajek monopole solution is guaranteed in the only vicinity of the black hole.
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