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Relativistic Force-Free Electrodynamic Simulations of Neutron Star Magnetospheres | | Jonathan C. McKinney
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19 Jan 2006 | | Abstract: | The luminosity and structure of neutron star magnetospheres are crucial to our understanding of pulsar and plerion emission. A solution found using the force-free approximation would be an interesting standard with which any model with more physics could be compared. Prior quasi-analytic force-free solutions may not be stable, while prior time-dependent magnetohydrodynamic models used unphysical model parameters. We use a time-dependent relativistic force-free electrodynamics code with no free parameters to find a unique stationary solution for the axisymmetric rotating pulsar magnetosphere in a Minkowski space-time in the case of no surface currents on the star. The solution is similar to the force-free quasi-analytic solution of citet{cont99} and the numerical magnetohydrodynamic solution of citet{kom05}. The magnetosphere structure and the usefulness of the classical y-point in the general dissipative regime are discussed. The pulsar luminosity is found to be $L approx 0.99pm 0.01 mu^2Omega_star^4/c^3$ for a dipole moment $mu$ and stellar angular frequency $Omega_star$. | | Source: | arXiv, astro-ph/0601411 | | Services: | Forum | Review | PDF | Favorites | |
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