Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.209..285a&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 209, July 15, 1984, p. 285-306.
Astronomy and Astrophysics
Astronomy
2
Pulsar Magnetospheres, Pulsars, Space Plasmas, Stellar Atmospheres, Stellar Magnetic Fields, Stellar Models, Electron Beams, Force-Free Magnetic Fields, Magnetic Field Configurations, Magnetically Trapped Particles, Magnetohydrodynamic Stability, Rotating Plasmas, Stellar Rotation
Scientific paper
Some static and dynamic solutions of the aligned rotator model for pulsars are examined. Attention is given to three different configurations of the pulsar magnetosphere including a finite, cold, force-free pulsar plasma atmosphere; a field of charged beams above the pulsar polar caps; and an alternative configuration in which particles are exchanged between the neutron-star surface and a force-free magnetospheric plasma. Two conclusions were drawn on the basis of inconsistencies found in these configurations: (1) an (axisymmetric) vacuum gap separating a noncorotating force-free magnetospheric plasma from a corotating plasma cannot exist in the aligned rotator; (2) a finite zone in which beams of particles move up and down in the 'open' magnetic field lines cannot be connected to the infinite vacuum. The results integrate a large body of evidence associated with the shape of the pulsar magnetosphere, and are therefore considered to be a reliable basis on which to develop a new configuration of the pulsar magnetosphere.
Asseo Estelle
Beaufils D.
Pellat Rene
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