Abstract
In this investigation, the evolution of dust-acoustic (DA) nonlinear structures (solitons, rogons and breathers) has been examined in the Jovian magnetosphere. A five components plasma having positive dust grains, solar wind protons, superthermal electrons, ions as well as solar wind electrons is considered. The Korteweg–de Vries (KdV) equation has been derived by employing the reductive perturbation method to study solitons. Furthermore, using suitable transformation in the KdV equation, the nonlinear Schrödinger equation (NLSE) has been derived. The localized different solutions of NLSE leading to the formation of rogons, Akhmediev breathers (AB) and Kuznetsov–Ma breathers (KM) have also been studied. The influence of various physical parameters, namely, superthermality of different species (electrons, ions as well as solar wind electrons), temperature ratios and concentration of different species on the salient features of DA solitons, rogons and breathers has been analyzed numerically.
| Original language | English |
|---|---|
| Article number | 63 |
| Journal | Journal of Astrophysics and Astronomy |
| Volume | 43 |
| Issue number | 2 |
| DOIs | |
| State | Published - Dec 2022 |
| Externally published | Yes |
Funding
GS has presented a part of this paper in two days Conference on ‘Chandra’s Contribution in Plasma Astrophysics’ on the 111th Birth Ceremony of Prof. S. Chandrasekhar held during 19–20 October 2021 in School of Physical Sciences, JNU, New Delhi. The authors gratefully acknowledge the support for this research work from the Department of Science and Technology, Government of India, New Delhi, under DST-SERB project No. CRG/2019/003988.
| Funders | Funder number |
|---|---|
| Jawaharlal Nehru University | |
| Department of Science and Technology, Ministry of Science and Technology, India | CRG/2019/003988 |
Keywords
- Dust-acoustic waves
- Jovian magnetosphere
- breathers
- rogons
- superthermal distribution