Dust ion-acoustic shock waves in nonextensive dusty plasma

被引:56
作者
Yasmin, S. [1 ]
Asaduzzaman, M. [1 ]
Mamun, A. A. [1 ]
机构
[1] Jahangirnagar Univ, Dept Phys, Dhaka 1342, Bangladesh
关键词
Dust ion-acoustic shock waves; Burgers equation; Nonextensive electrons; Reductive perturbation method; SOLITARY; ELECTRONS; SYSTEMS;
D O I
10.1007/s10509-012-1208-1
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A parametric survey on the propagation characteristics of the dust ion-acoustic (DIA) shock waves showing the effect of nonextesivity with nonextensive electrons in a dissipative dusty plasma system has been carried out using the reductive perturbation technique. We have considered continuity and momentum equations for inertial ions, q-distributed nonextensive electrons, and stationary charged dust grains, to derive the Burgers equation. It has been found that the basic features of DIA shock waves are significantly modified by the effects of electron nonextensivity and ion kinematic viscosity. Depending on the degree of nonextensivity of electrons, the dust ion-acoustic shock structures exhibit compression and rarefaction. The implications of our results would be useful to understand some astrophysical and cosmological scenarios like stellar polytropes, hadronic matter and quark-gluon plasma, protoneutron stars, dark-matter halos, etc., where effects of nonextensivity can play the significant roles.
引用
收藏
页码:245 / 250
页数:6
相关论文
共 49 条