Toward the Quasi--Steady State Electrodynamics of a Neutron Star

Details Toward the Quasi--Steady State Electrodynamics of a Neutron Star Toward the Quasi--Steady State Electrodynamics of a Neutron Star

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...485..735m&link_type=abstract

Astrophysical Journal v.485, p.735

Astronomy and Astrophysics

Astronomy

72

Magnetohydrodynamics: Mhd, Stars: Pulsars: General, Relativity, Stars: Neutron

Scientific paper

We consider the electrodynamics of a rotating magnetized neutron star with allowance for the quasi--steady state regime of charged particle ejection from the polar cap into the inner magnetosphere. We derive basic equations within the framework of a general relativistic formalism and present the analytic solutions. We demonstrate that the quasi--steady state supply of electrons into the region of open field lines reduces the total power put into the acceleration of primary particles, although the total power corresponding to a steady state solution in general relativity is increased compared to the flat-space solution. Also, we illustrate that temporarily modulated ejection of electrons from the stellar surface results in substantial modulation of an accelerating electric field and charge density along the open field lines. We briefly outline the implications of this effect for the pulsars.

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