Abstract
An investigation of dust acoustic (DA) dromions in a magnetized dusty plasma consisting of inertial dust fluid, kappa-type distributed electrons, and ions is presented. Using reductive perturbation technique, we have derived coupled nonlinear evolution equations of (2 + 1) dimensions (called Davey-Stewartson (DS-I) equations). Hirota bilinear method has been employed to derive the analytical solution of DS-I equations. The solutions of such equations are exponentially localized and are called dromions. The combined effects of various physical parameters such as superthermality of charged particles, strength of magnetic field, and dust concentration have been studied on the existence regions and propagation properties of DA dromions in context with observations of POLAR satellite in the presence of superthermal particles in polar cap boundary layer region of Earth's atmosphere.
| Original language | English |
|---|---|
| Pages (from-to) | 5944-5958 |
| Number of pages | 15 |
| Journal | Journal of Geophysical Research: Space Physics |
| Volume | 121 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 1 2016 |
| Externally published | Yes |
Funding
We gratefully acknowledge I. Kourakis, QUB, Northern Ireland, UK, for his valuable suggestions for the improvement of this manuscript. This work is supported by the University Grants Commission, New Delhi, India, under the major research project F. 41-873/2012(SR). Y.G. gratefully acknowledges the University Grants Commission(UGC) for providing scholarship under Basic Scientific Research (BSR) scheme. The numerical data used for generating all the figures and table will be made available upon request from the corresponding author.
| Funders | Funder number |
|---|---|
| University Grants Commission | F. 41-873/2012 |
| University Grants Committee |
Keywords
- Davey-Stewartson equation
- dromions
- dust acoustic
- kappa distribution