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Radiation from an accelerated charged particle emitting null fluid

F H J Cornish and B Micklewright

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We consider a metric of the Kerr - Schild family which gives the geometry of spacetime in the presence of a charged particle undergoing arbitrarily accelerated motion with the anisotropic emission of null fluid. An interpretation in terms of the flow of energy and momentum in the background flat spacetime shows that the null fluid provides the input of energy and momentum necessary to accelerate the particle with the emission of electromagnetic radiation. The classical electromagnetic radiation reaction term arises naturally in the analysis. There is no gravitational radiation.


PACS

04.40.Nr Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or classical fields

04.20.Gz Spacetime topology, causal structure, spinor structure

MSC

83C50 Electromagnetic fields

83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)

Subjects

Gravitation and cosmology

Dates

Issue 9 (September 1996)

Received 24 November 1995, in final form 27 June 1996



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