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Electron holes in phase space: What they are and why they matter

Hutchinson, I. H.

This is a tutorial and selective review explaining the fundamental concepts and some currently open questions concerning the plasma phenomenon of the electron hole. The widespread occurrence of electron holes in numerical simulations, space-craft observations, and laboratory experiments is illustrated. The elementary underlying theory is developed…

Simulation of magnetic holes formation in the magnetosheath

Raeder, Joachim; Ahmadi, Narges; Germaschewski, Kai

Magnetic holes have been frequently observed in the Earth's magnetosheath and are believed to be the consequence of the nonlinear evolution of the mirror instability. Mirror mode perturbations mainly form as magnetic holes in regions where the plasma is marginally mirror stable with respect to the linear instability criterion. We present an expand…

Nonlinear propagation of kinetic Alfvén wave and turbulent spectrum in reconnection region of magnetotail

Sharma, R. P.; Yadav, Nitin; Sharma, Prachi +2 more

Kinetic Alfvén waves (KAWs) are known to play an important role in magnetic reconnection as well as in turbulence. In the present work, we have derived the dynamical equation of KAWs propagating through Harris sheet. It is assumed that background density gets modified due to nonlinearity and background field gets modified due to the presence of Ha…

Nonlinear evolution of 3D whistler waves in space plasmas

Sharma, R. P.; Pathak, Neha; Yadav, Nitin

The present model is proposed to study the nonlinear effects related to quasi-transverse 3D whistler waves in three different regions of space plasmas which are Earth's radiation belt, magnetopause, and solar wind plasma at 1 A.U. We have analysed the effect of considering the third dimension in the dynamics of whistler waves on Localization of wh…

Nonlinear effects associated with kinetic Alfvén wave in magnetic islands

Sharma, R. P.; Sharma, Swati; Yadav, Nitin +1 more

Observations show that kinetic Alfvén waves (KAWs) play a very important role in turbulence as well as in magnetic reconnection and have also been a topic of debate in the context of particle heating. In this paper, we aim to investigate the effect of magnetic islands on the dynamics of the nonlinear KAW. The formation of current sheet/coherent st…