Nonlinear Coupling of Electromagnetic and Electron Acoustic Waves in Multi-Species Degenerate Astrophysical Plasma
arXiv:1912.13197 · doi:10.1063/1.5135959
Abstract
Nonlinear wave--coupling is studied in a multi-species degenerate astrophysical plasma consisting of two electron species (at different temperatures): a highly degenerate main component plus a smaller classical relativistic flow immersed in a static neutralizing ion background. It is shown that the high frequency electromagnetic (HF EM) waves, through their strong nonlinear interactions with the electron--acoustic waves (sustained by a multi-electron component (degenerate) plasma surrounding a compact astrophysical object) can scatter to lower frequencies so that the radiation observed faraway will be spectrally shifted downwards. It is also shown that, under definite conditions, the EM waves could settle into stationary Solitonic states. It is expected that the effects of such structures may persist as detectable signatures in forms of modulated micro-pulses in the radiation observed far away from the accreting compact object. Both these effects will advance our abilities to interpret the radiation coming out of the compact objects.
arXiv comment8 pages of two-column text, accepted for publication to Physics of Plasmas
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- Nonlinear Coupling of Electromagnetic and Spin-Electron-Acoustic Waves in Spin-polarized Degenerate Relativistic Astrophysical Plasma
- Stability of electromagnetic solitons]{Electromagnetic solitons and their stability in relativistic degenerate dense plasmas with two electron species
- On the structure of relativistic hydrodynamics for hot plasmas
- Relativistic hydrodynamic model with the average reverse gamma factor evolution for the degenerate plasmas: high-density ion-acoustic solitons
- Microscopic model for relativistic hydrodynamics of ideal plasmas
- Solitary structure formation and self-guiding of electromagnetic beam in highly degenerate electron plasma
- Waves propagating parallel to the magnetic field in relativistically hot plasmas: A hydrodynamic model
- Pattern formation and spatiotemporal chaos in relativistic degenerate plasmas