Parveen BalaHarpreet Kaur2017-12-122017-12-122017http://krishikosh.egranth.ac.in/handle/1/5810037390On the surface of fast rotating neutron stars and in the pulsar magnetosphere, a strong magnetic field exists, and this magnetic field has a significant impact on nonlinear wave propagation. In the present study, the nonlinear wave structures have been investigated in magnetized plasma consisting of electrons obeying nonextensive distribution and stationary ions. Using the reductive perturbation technique, the basic set of equations is reduced to Korteweg-de Vries (K-dV) equation and steady state solution of the K-dV equation is obtained. The basic characteristics of the solitary waves have been analyzed numerically and graphically for a wide range of values of the plasma parameters. The presented investigation shows that the presence of nonextensive distributed electrons causes reduction in the soliton amplitude. The magnetic field has no effect on the amplitude of solitary waves but it makes the solitons spiky. The effects of the ion to electron temperature ratio and angle of propagation in this situation are also discussed. This model may be helpful to understand the nonlinear features of localized electrostatic fluctuations in the presence of magnetic field, nonmaxwellian electrons, which is most common particularly in space plasmas such as Earth‘s magnetosphere, auroral region and heliospheric environments.ennullThesis