Radiation from a Charge in a Gravitational Field

Details Radiation from a Charge in a Gravitational Field Radiation from a Charge in a Gravitational Field

1999-10-13

arxiv.org/abs/physics/9910019v1

Gen.Rel.Grav. 36 (2004) 315-330

Physics

Classical Physics

9 pages. one figure

Scientific paper

10.1023/B:GERG.0000010478.00884.

When an electric charge is supported at rest in a static gravitational field, its electric field is not supported with the charge, and it falls freely in the gravitational field. Drawing the electric field lines continuously in time, we find that they always emerge from the charge, but the electric field is curved and there is a stress force between the freely falling (curved) field and the static charge. The charge radiates and the work done by the gravitational field to overcome the stress force is the source for the energy radiated by the supported (static) charge. {\it A static charge in a gravitational field radiates, as predicted by the principle of equivalence}. This mechanism is similar to the one applied to an electric charge accelerated in a free space. In this case, the electric field is not accelerated with the charge. The electric field is curved, and there is a stress force between the charge and its field. The work done in overcoming the stress force is the source of the energy radiated by the accelerated charge.

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