Open Access

Multiple shocks near Mars

  • Eduard Dubinin1, 2, 5Email author,
  • Konrad Sauer1, 5,
  • Klaus Baumgärtel3, 5 and
  • Krishna Srivastava4
Earth, Planets and Space201450:BF03352114

https://doi.org/10.1186/BF03352114

Received: 4 August 1997

Accepted: 13 January 1998

Published: 6 June 2014

Abstract

Mars presents us with an example of a magnetosheath in which the interaction of the solar wind with planetary plasma of heavy ions results in a generation of strong nonlinear bi-ion MHD waves. These waves provide oscillations in the momentum exchange between protons and heavy ions and may give rise to multiple shock-like structures. One-dimensional hybrid simulations of plasma flow interaction with a “heavy ion obstacle” were performed to study the generation of shock waves in bi-ion plasma. A differential motion of protons and heavy ions leads to bunching of heavy ion flow picked up by solar wind. Plasma bunching arises because of a resonant interaction between magnetosound waves excited by beam and “slow” waves of a spatial charge in the heavy ion flow. Both kinds of waves grow, steepen and gradually evolve to shocks.