Spherical propagation of large amplitude pulsar waves

Details Spherical propagation of large amplitude pulsar waves Spherical propagation of large amplitude pulsar waves

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...139..417a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 139, no. 2, Oct. 1984, p. 417-425.

Astronomy and Astrophysics

Astrophysics

6

Cosmic Plasma, Electromagnetic Radiation, Pulsars, Spherical Waves, Collisionless Plasmas, Electron Plasma, Electron-Positron Plasmas, Maxwell Equation, Polarized Electromagnetic Radiation, Relativistic Plasmas, Wave Propagation

Scientific paper

The propagation of a large amplitude, superluminous, linearly polarized electromagnetic wave in an electron positron plasma is considered. The propagation in a homogeneous plasma is described and the results of the plane wave case are reviewed. The propagation in an inhomogeneous plasma with zero-averaged electric and magnetic fields is then investigated. An equation is obtained for the periodic perturbation of the potential vector in terms of the derivatives, with respect to the slow variable, of the physical quantity 'constant' at zeroth order and characteristic of the sawtooth-shaped solution. The conservation equations are solved by means of the modified zeroth order solution. The energy, radial impulsion, and particle number fluxes are obtained as functions of the mean physical quantities averaged over one wave period. A dispersion relation involving fluxes is obtained. The variations of the strength parameter and of the perturbed potential vector as functions of the slow spatial scale are deduced.

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