Astrophysics and Space Science

, Volume 174, Issue 1, pp 143–150 | Cite as

Large-amplitude low-frequency electromagnetic waves in pulsar magnetospheres

  • G. S. Lakhina
  • N. L. Tsintsadze


Nonlinear propagation of strong low-frequency waves, as emitted by pulsars or compact galactic nuclei at their rotation frequencies, in a magnetized plasma is investigated. It is shown that even rather small amplitude waves can drive electrons to ultrarelativistic energies. In the limit when the electrons are ultrarelativistic but the ions are immobile, two types of circularly polarized waves (i.e., ω± modes) are excited. In the wave zone of the Crab pulsar, both the electric field (∼ 3 V m−1) and the wavelength (∼108 m) of the ω- mode are larger, by an order of magnitude, than those of the ω+ wave mode. Both ω± modes can become modulationally unstable due to their nonlinear interaction with density fluctuations induced by the electrostatic waves.


Electromagnetic Wave Small Amplitude Amplitude Wave Wave Mode Nonlinear Interaction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • G. S. Lakhina
    • 1
  • N. L. Tsintsadze
    • 2
  1. 1.Indian Institute of GeomagnetismBombayIndia
  2. 2.Institute of PhysicsAcademy of the Georgian S.S.R.TbilisiU.S.S.R.

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