Abstract
Plasma waves are observed in almost all the solar system objects such as planets, their satellites, comets, interplanetary medium (IPM) and Sun. In most of these solar system plasma environments, the typical plasma density has a range between 103 - 106 cm-3 and plasma temperature of about 0.1 eV which is capable of sustaining some plasma waves of the complete wave spectrum. In IPM, some natural plasma modes are observed whose origin is believed to be near the Sun. The plasma in solar core and in corona itself support and sustain a number of electrostatic (ES) and electromagnetic (EM) plasma waves. The solar plasma waves carry energy away from the Sun to far-off places as well as incite particle transport from the solar core to interplanetary space. These waves also provide information on energy distribution in solar plasma. This paper revisits the plasma waves coming from Sun towards Earth in the form of a brief review.
Highlights
Solar Plasma EnvironmentIn Sun, there is a clear distinction between the magnetic fields and plasmas in the solar core, in photosphere and that in corona
Plasma waves are omnipresent in space plasmas and are observed in our solar system [1, 2]
Despite the fact that there were about six missions dedicated to study solar plasma and the associated phenomena such as plasma waves and magnetic disturbances, the following scientific issues are only partially addressed and are there still unresolved [5]: 1) The role that plasma waves play at interplanetary discontinuities and at stream-stream interaction fronts as when there is a discontinuity, some energy has to propagate away from there which provide a non-local wave-particle interaction mechanism
Summary
In Sun, there is a clear distinction between the magnetic fields and plasmas in the solar core, in photosphere and that in corona. In the core of Sun, both plasma density and plasma temperature are very high. The plasma density is very high when compared with the corona. The plasma temperature in photosphere is about three orders less than that exist in corona.
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