Effect of electron streaming on the kinetic instability of drift magnetosonic waves in solar wind

Satellite observations predict that drift magnetosonic waves play an important role in solar wind heating. We examine the effect of parallel streaming of electrons on the drift magnetosonic mode in an anisotropic solar wind environment. Free energy sources, including electron streaming, density inhomogeneity, and temperature anisotropy, are simultaneously present in the solar wind and may influence the kinetic instability of the magnetosonic mode. We explore the interaction of these sources and study the consequent growth of a magnetosonic wave. The instability generated by drift magnetosonic waves is found to be suppressed by the streaming of electrons. This finding supports Landau damping of the waves, which results in the heating of the solar wind.