Ab-initio pulsar magnetosphere: three-dimensional particle-in-cell simulations of axisymmetric pulsars

Alexander Philippov; Anatoly Spitkovsky (Princeton University)

Ab-initio pulsar magnetosphere: three-dimensional particle-in-cell simulations of axisymmetric pulsars

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arxiv 1312.4970 v2 pith:EPZ4QA4I submitted 2013-12-17 astro-ph.HE

Alexander Philippov , Anatoly Spitkovsky (Princeton University) This is my paper · ORCID

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keywords magnetospherepairplasmapulsarcurrentneutronparticle-in-cellsimulations

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We perform first-principles relativistic particle-in-cell simulations of aligned pulsar magnetosphere. We allow free escape of particles from the surface of a neutron star and continuously populate the magnetosphere with neutral pair plasma to imitate pair production. As pair plasma supply increases, we observe the transition from a charge-separated electrosphere solution with trapped plasma and no spin-down to a solution close to the ideal force-free magnetosphere with electromagnetically-dominated pulsar wind. We calculate the magnetospheric structure, current distribution and spin-down power of the neutron star. We also discuss particle acceleration in the equatorial current sheet.

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