Linearly coupled oscillations in fully degenerate pair and warm pair-ion astrophysical plasmas

Effects of quantum statistical pressure and exchange correlation on the low frequency electromagnetic waves in degenerate Fermi-Dirac pair-ion plasma

“…Their omnipresence is also accepted in the interior of accretion disks surrounding black holes, magnetospheres of the neutron star and pulsar, environments like the bipolar outflows (jets), active galactic nuclei, polar regions of neutron stars, at the center of Milky Way galaxy etc. [8][9][10] In order to understand the physical phenomena happening hundred of light years away, EP plasmas are created by interaction of ultraintense laser with the solid targets. Scientists are hopeful that these interactions will lead to creation of highly dense laboratory electron positron plasmas (n ∼ 10 26 m −3 ) [11,12].…”

“…Presence of ions, in EP plasmas has also been identified in both laboratory and astrophysics [13], which breaks the symmetry of equal mass and number of pair particles eventually leading to the new and interesting avenue of research for the scientists [9,10].…”

“…Whereas Small temperature differences and also some nonlinear phenomena which emerge naturally during the evolution of pair particles may usually cause this asymmetric behavior in the experiments. On the other hand small contamination of much heavier immobile ion, or small mass difference of the pair particles can also produce asymmetries [9,10]. In electron -positron -ion (EPI) plasmas, physical phenomena like waves and instabilities can occur at both fast (high frequency) and slow (low frequency) time scales.…”

New longitudinal mode and compression of pair ions in plasma

“…), near the polar cusp regions of the pulsars and neutron star atmospheres, in the inner region of the accretion disks surrounding the central black hole, in quasar atmospheres, and in the Van Allen radiation belts etc. [12][13][14][15][16][17][18]. It is also known that the early prestellar period of the evolution of the Universe was presumably dominated by relativistic electrons and positrons [19].…”

Nonlinear Electromagnetic Waves in a Degenerate Electron-Positron Plasma

“…The solitary pulses are formed due to a balance between the compressional wave dispersion arising from the curl of the inertial forces in Faraday's law and the nonlinearity associated with the divergence of the electron and positron fluxes, the nonlinear Lorentz forces, the advection of the EP fluids, and the nonlinear plasma current densities. Later, a strongly magnetized, ultradense EP plasma with degenerate electrons and positrons is considered by Khan et al [33,34]. They found that by introducing ion species in their EP model, the shear electromagnetic wave is shown to couple with electrostatic ion mode under certain conditions.…”