ABSTRACT
Plasma waves are observed in planets with magnetospheres—Earth, Mercury, Jupiter, Saturn, Uranus, and Neptune—as well as in planets such as Venus and Mars, which are deprived of a global magnetic field [1, 2]. Plasma waves are detected in planetary satellites and comets. The plasma in the Sun itself supports plasma waves such as Alfvén waves [3], which 232are observed in solar corona along the solar magnetic field which travels up to interplanetary medium and are observed there. Plasma waves are predicted to exist in interstellar medium also where the Langmuir waves and Alfvén waves excited by the incoming anisotropic cosmic rays stream along the magnetic field lines. The Alfvén waves are also believed to be present in the dusty winds of cooled supergiant stars. An abrupt rise in temperature is observed with the distance from the surface of supergiant stars, which can be explained by the mechanical dissipation of these Alfvén waves. Plasma waves are believed to exist in many other natural plasma systems, such as pulsars, quasars, and galaxies. In this chapter, all these waves are discussed in the form of a mini review.
