Investigations of the magnetospheric plasma distribution in the vicinity of a pulsar-DYMPHNA3D

Details Investigations of the magnetospheric plasma distribution in the vicinity of a pulsar-DYMPHNA3D Investigations of the magnetospheric plasma distribution in the vicinity of a pulsar-DYMPHNA3D

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc..983..124m&link_type=abstract

40 YEARS OF PULSARS: Millisecond Pulsars, Magnetars and More. AIP Conference Proceedings, Volume 983, pp. 124-126 (2008).

Physics

Pulsars, Neutron Stars, Numerical Simulation, Solution Of Equations, Magnetohydrodynamics And Plasmas

Scientific paper

The magnetospheric plasma distribution in the vicinity of a pulsar at various inclination angles is investigated using a new relativistic, parallel 3D Particle-In-Cell (PIC) code, DYMPHNA3D. Our initial simulation results are presented here. These show similar solutions to those obtained from previous numerical simulations, which show the fundamental plasma distribution in the vicinity of an aligned rotating neutron star to consist of two polar domes and an equatorial torus of trapped non-neutral plasma of opposite sign, separated by a vacuum gap. Furthermore, our code allows for off-axis simulations and we have we have found that this plasma distribution collapses into a quad-lobe charge-separated non-neutral distribution in the case of an orthogonal rotator, bearing a stark resemblance to that predicted theoretically by Parish in 1974, [11], with the exception that in our results, the plasma remains trapped close to the stellar surface by the force-free (Evec .Bvec = 0) surfaces observed in this region.

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