Gravitation and Cosmology

, Volume 15, Issue 1, pp 20–27 | Cite as

Gravitational radiospectrometer

  • G. S. Bisnovatyi-KoganEmail author
  • O. Yu. Tsupko


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.

PACS numbers

04.20.-q 04.20.Cv 95.30.Sf 41.20.Jb 42.15.-i 98.62.Sb 


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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  1. 1.Space Research Institute of Russian Academy of ScienceMoscowRussia
  2. 2.Joint Institute for Nuclear ResearchDubnaRussia
  3. 3.Moscow Engineering Physics InstituteMoscowRussia

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