Covariant theory of short waves in gas acted upon by a gravitational field
Abstract
The basic equations describing the behaviour of electromagnetic and gravitational short waves in relativistic gas in an external gravitational field are derived. Short EM waves in plasma split into quasilongitudinal and quasitransversal ones in the external gravitational field. The amplitude and eikonal of these modes satisfy a system of partial differential equations. An equation is obtained for the amplitude of the gravitational short wave in relativistic gas. The law of the electromagnetic wave amplitude damping in plasma in the external gravitational field is obtained for the case where the angular frequency is much greater than the product Boltzmann constant times average particle heat velocity.
 Publication:

Ukrainskii Fizicheskii Zhurnal
 Pub Date:
 May 1977
 Bibcode:
 1977UkFiZ..22..813Z
 Keywords:

 Collisionless Plasmas;
 Gravitational Fields;
 Plasma Waves;
 PlasmaElectromagnetic Interaction;
 Relativistic Plasmas;
 Short Wave Radiation;
 Covariance;
 Eikonal Equation;
 Maxwell Equation;
 Partial Differential Equations;
 Astrophysics