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Radiated power of oscillators traveling in a moving medium

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Radiophysics and Quantum Electronics Aims and scope

Abstract

We consider the radiation from oscillating electric and magnetic dipoles moving with constant velocity directed parallel or antiparallel to the velocity of the surrounding medium. It is assumed that the medium in its rest frame is isotropic and has no spatial dispersion. We obtain expressions for the spectral density of the radiated power. In the case of a nondispersive medium, algebraic expressions for the total radiated power in the regime of “subluminal relative motion” are also obtained. In particular, it is shown that the energy loss of a source is negative if it moves in the direction of the superluminal motion of the medium and the source velocity is somewhat smaller than the medium velocity. It is noted that this phenomenon takes place for a smaller difference between the velocities of the source and the medium compared with a similar phenomenon for nonoscillating sources.

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Authors and Affiliations

  1. Research Institute of Radiophysics of the St. Petersburg State University, St. Petersburg, Russia

    É. G. Doil’nitsina & A. V. Tyukhtin

Authors
  1. É. G. Doil’nitsina
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  2. A. V. Tyukhtin
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Correspondence to É. G. Doil’nitsina.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 50, No. 4, pp. 316–328, May 2007.

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Doil’nitsina, É.G., Tyukhtin, A.V. Radiated power of oscillators traveling in a moving medium. Radiophys Quantum Electron 50, 287–298 (2007). https://doi.org/10.1007/s11141-007-0025-9

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  • DOI: https://doi.org/10.1007/s11141-007-0025-9

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