Gravitational radiospectrometer

G.S. Bisnovatyi-Kogan1 and O.Yu. Tsupko2

Abstract

Gravitational lensing is predicted by general relativity and is found in observations. When a gravitating body is surrounded by a plasma, the lensing angle depends on the frequency of the electromagnetic wave due to refraction properties, and the dispersion properties of light propagation in the plasma. The last effect leads to a frequency dependence, even in the uniform plasma, of the lensing angle, which resembles the properties of a refractive prism spectrometer. The strongest action of this spectrometer is for the frequencies slightly exceeding the plasma frequency, which corresponds to very long radiowaves.

References

  1. G. S. Bisnovatyi-Kogan and O. Yu. Tsupko, Grav. & Cosmol. 14 226 (2008).
  2. P. V. Bliokh and A. A. Minakov, Gravitational Lenses (Naukova Dumka, Kiev, 1989) (in Russian).
  3. S. Ya. Braude, A. V. Megn, S. L. Rashokovski, B. P. Ryabov, N. K. Sharykin, K. P. Sokolov, A. P. Tkatchenko, and I. N. Zhouk, The UTR-2 Very Low-Frequency Sky Survey Data (Braude+ 1978-2002), VizieR On-line Data Catalog (2007).
  4. T. Damour and G. Esposito-Farese, Phys. Rev. D 58 042001 (1998).
  5. V. Faraoni, Astroph. J. 398 425 (1992).
  6. V. A. Fok, Theory of Space, Time, and Gravitation (Moscow, 1955) (in Russian).
  7. V. L. Ginzburg, The Propagation of Electromagnetic Waves in Plasmas (International Series of Monographs in Electromagnetic Waves, Pergamon, Oxford, 1970).
  8. I. S. Gradshtein and I. M. Ryzhik, Tables of Integrals, Sums, and Products (Nauka, Moscow, 1971) (in Russian).
  9. L. D. Landau and E. M. Lifshitz, Electrodynamics of Continuous Media, Course of Theoretical Physics (Pergamon Press, Oxford, 1960).
  10. L. D. Landau and E. M. Lifshitz, The Classical Theory of Fields (Pergamon, Oxford, 1993).
  11. C. Moller, The Theory of Relativity (Clarendon Press, Oxford, 1972).
  12. D. O. Muhleman and I. D. Johnston, Phys. Rev. Lett. 17 8, 455 (1966).
  13. D. O. Muhleman, R. D. Ekers, and E. B. Fomalont, Phys. Rev. Lett. 24 24, 1377 (1970).
  14. T. W. Noonan, Astroph. J. 262 344 (1982).
  15. P. Schneider, J. Ehlers, and E. Falco, Gravitational Lensing (Springer-Verlag, Berlin, 1992).
  16. J. L. Synge, Relativity: the General Theory (North-Holland Publishing Company, Amsterdam, 1960).
  17. V. V. Zhelezniakov, Electromagnetic Waves in Space Plasma: Generation and Propagation (Nauka, Moscow, 1977) (in Russian).
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