• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/086/05/1143-1151

    • Keywords

       

      Relativistic degenerate plasma; dispersion; velocity shear.

    • Abstract

       

      We investigate the existence and propagation of low-frequency (in comparison to ion cyclotron frequency) electrostatic ion waves in highly dense inhomogeneous astrophysical magnetoplasma comprising relativistic degenerate electrons and non-degenerate ions. The dispersion equation is obtained by Fourier analysis under mean-field quantum hydrodynamics approximationfor various limits of the ratio of rest mass energy to Fermi energy of electrons, relevant to ultrarelativistic, weakly-relativistic and non-relativistic regimes. It is found that the system admits an oscillatory instability under certain condition in the presence of velocity shear parallel to ambient magnetic field. The dispersive role of plasma density and magnetic field is also discussed parametrically in the scenario of dense and degenerate astrophysical plasmas.

    • Author Affiliations

       

      KHAN SHABBIR A1 2 BAKHTIAR-UD-DIN 3 ILYAS MUHAMMAD4 WAZIR ZAFAR3

      1. National Centre for Physics, Quaid-i-Azam University Campus, Islamabad 45320, Pakistan
      2. Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8540, Japan
      3. Department of Physics, Riphah International University, Islamabad 44000, Pakistan
      4. Department of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.