• Yday Narayan Ghosh

      Articles written in Pramana – Journal of Physics

    • Effect of superthermal electrons on dust-acoustic Gardner solitons in nonplanar geometry

      Deb Kumar Ghosh Yday Narayan Ghosh Prasanta Chatterjee C S Wong

      More Details Abstract Fulltext PDF

      The properties of nonplanar (cylindrical and spherical) dust-acoustic solitary waves (DASWs) in an unmagnetized, collisionless three-component dusty plasma, whose constituents are negatively charged cold dust fluid, superthermal/non-Maxwellian electrons (represented by kappa distribution) and Boltzmann distributed ions, are investigated by deriving the modified Gardner (MG) equation. The well-known reductive perturbation method is employed to derive the MG equation. The basic features of nonplanar DA Gardner solitons (GSs) are discussed. It is seen that the properties of nonplanar DAGSs (positive and negative) significantly differ as the value of spectral index 𝜅 changes.

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