Stochastic Acceleration of Cometary Ions by Lower Hybrid Waves

  1. Thomas J. Birmingham and
  2. Alexander J. Dessler
  1. B. Buti1 and
  2. G.S. Lakhina2

Published Online: 19 MAR 2013

DOI: 10.1029/SP027p0125

Comet Encounters

Comet Encounters

How to Cite

Buti, B. and Lakhina, G.S. (1988) Stochastic Acceleration of Cometary Ions by Lower Hybrid Waves, in Comet Encounters (eds T. J. Birmingham and A. J. Dessler), American Geophysical Union, Washington, D.C.. doi: 10.1029/SP027p0125

Author Information

  1. 1

    Physical Research Laboratory, Ahmedabad-380009, India

  2. 2

    Indian Institute of Geomagnetism, Colaba, Bombay-400005, India

Publication History

  1. Published Online: 19 MAR 2013
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780875902395

Online ISBN: 9781118668757



  • Cometary ions;
  • Electromagnetic turbulence;
  • Lower hybrid waves;
  • Low frequency electrostatic;
  • Solar wind


The turbulence produced by lower hybrid waves, during interaction of solar wind with the cometary pick-up ions, leads to stochastic acceleration of these ions. The resulting energies of the cometary ions, calculated on the assumption that the entire turbulent electric field is used up for accelerating particles, are much larger compared to the recently observed energies of water-group ions in the vicinity of comets Halley as well as Giacobini-Zinner. Accounting for the fact that only a fraction of the field would lead to acceleration and the rest to heating, lower hybrid waves seem to be a potential source for the observed energetic cometary ions.