Open Access

Wave observations at the foreshock boundary in the near-Mars space

  • A. Skalsky1, 2Email author,
  • E. Dubinin1, 2, 4,
  • M. Delva2, 5,
  • R. Grard3,
  • S. Klimov1,
  • K. Sauer2, 4 and
  • J. G. Trotignon6
Earth, Planets and Space201450:BF03352131

https://doi.org/10.1186/BF03352131

Received: 4 August 1997

Accepted: 20 February 1998

Published: 6 June 2014

Abstract

Wave and plasma measurements carried out by the Phobos-2 spacecraft in the Martian environment indicate that a part of solar wind electrons and ions are reflected and accelerated at the Martian bow shock. These particles streaming back into the solar wind lead to the formation of the foreshock region upstream the planetary bow shock. It is shown that the general structure of the foreshock at Mars is similar to that of the foreshock region upstream the Earth’s bow shock. However, the electric emissions observed at frequencies around 100 Hz at the leading edge of electron foreshock at Mars have been never reported for observations in the similar region at Earth. The burst of these waves occurs before the spacecraft enters the electron foreshock identified with the onset of electron plasma waves and calculations of the magnetic connection to the planetary bow shock.