• Ultra-low-frequency dust-electromagnetic modes in self-gravitating magnetized dusty plasmas

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      https://www.ias.ac.in/article/fulltext/pram/056/05/0643-0656

    • Keywords

       

      Self-gravitating magnetized dusty plasma; ultra-low-frequency dust-electromagnetic modes; parallel propagation; oblique propagation; distabilizing effect

    • Abstract

       

      Obliquely propagating altra-low-frequency dust-electromagnetic waves in a self-gravitating, warm, magnetized, two fluid dusty plasma system have been investigated. Two special cases, namely, dust-Alfvén mode propagating parallel to the external magnetic field and dustmagnetosonic mode propagating perpendicular to the external magnetic field have also been considered. It has been shown that effects of self-gravitational field, dust fluid temperature, and obliqueness significantly modify the dispersion properties of these ultra-low-frequency dust-electromagnetic modes. It is also found that in parallel propagating dust-Alfvén mode these effects play no role, but in obliquely propagating dust-Alfvén mode or perpendicular propagating dust-magnetosonic mode the effect of self-gravitational field plays destabilizing role whereas the effect of dust/ion fluid temperature plays stabilizing role.

    • Author Affiliations

       

      AK Banerjee1 MN Alam1 AA Mamun1

      1. Department of Physics, Jahangirnagar University, Savar, Dhaka - 1342, Bangladesh
    • Dates

       
  • Pramana – Journal of Physics | News

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