On the non-planar dust-ion-acoustic waves in cosmic dusty plasmas with transverse perturbationsYi-Tian Gao1, 2 and Bo Tian3, 4, 2
1 Ministry-of-Education Key Laboratory of Fluid Mechanics and National Laboratory for Computational Fluid Dynamics, Beijing University of Aeronautics and Astronautics - Beijing 100083, China
2 State Key Laboratory of Software Development Environment, Beijing University of Aeronautics and Astronautics - Beijing 100083, China
3 CCAST (World Lab.) - P. O. Box 8730, Beijing 100080, China
4 School of Science, P. O. Box 122, Beijing University of Posts and Telecommunications - Beijing 100876, China (Mailing address for BT.)
received 10 September 2006; accepted in final form 6 November 2006; published January 2007
published online 9 January 2007
Dust-ion-acoustic waves in a cosmic dusty plasma is investigated, in spherical geometry with both azimuthal and zenith perturbations existing. (3+1)-dimensional spherical Kadomtsev-Petviashvili ((3+1)DsKP) model is constructed with symbolic computation, 4th-ordered and with variable coefficients. Auto-Bäcklund transformation and (3+1)DsKP nebulons are analytically obtained for such a generic model. Astromechanical and physical implications are discussed, of the supernova-shell-type expanding bright and Saturn-F-ring-type expanding dark (3+1)DsKP nebulons. Possibly observable nebulonic effects are proposed for future cosmic experiments.
52.35.Mw - Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.) .
52.35.Sb - Solitons; BGK modes.
05.45.Yv - Solitons.
© Europhysics Letters Association 2007