Particle Accelerator in Pulsar Magnetospheres: Super Goldreich-Julian Current with Ion Emission from the Neutron Star Surface

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dc.creatorHirotani, Kouichi
dc.date2006-08-02
dc.date.accessioned2026-07-07T10:39:42Z
dc.date.available2026-07-07T10:39:42Z
dc.descriptionWe investigate the self-consistent electrodynamic structure of a particle accelerator in the Crab pulsar magnetosphere on the two-dimensional poloidal plane, solving the Poisson equation for the electrostatic potential together with the Boltzmann equations for electrons, positrons and gamma-rays. If the trans-field thickness of the gap is thin, the created current density becomes sub-Goldreich-Julian, giving the traditional outer-gap solution but with negligible gamma-ray luminosity. As the thickness increases, the created current increases to become super-Goldreich-Julian, giving a new gap solution with substantially screened acceleration electric field in the inner part. In this case, the gap extends towards the neutron star with a small-amplitude positive acceleration field, extracting ions from the stellar surface as a space-charge-limited flow. The acceleration field is highly unscreened in the outer magnetosphere, resulting in a gamma-ray spectral shape which is consistent with the observations.
dc.description36 pages, 14 figures, accepted to Astroph. J
dc.identifierhttps://arxiv.org/abs/astro-ph/0608058
dc.identifierhttp://arxiv.org/abs/astro-ph/0608058
dc.identifierAstrophys.J.652:1475-1493,2006
dc.identifierdoi:10.1086/508317
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/181122
dc.subjectAstrophysics
dc.titleParticle Accelerator in Pulsar Magnetospheres: Super Goldreich-Julian Current with Ion Emission from the Neutron Star Surface
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