Marvdasht Branch Islamic Azad UniversityJournal of Optoelectronical Nanostructures2423-73614120190101Ultra- Relativistic Solitons with Opposing Behaviors in Photon Gas Plasma27383383ENEbrahimHeidariDepartment of Sciences, Bushehr Branch, Islamic Azad University, Bushehr, Iran0000-0003-4021-484XJournal Article20181203We have studied the formation of relativistic solitary waves due to nonlinear<br />interaction of strong electromagnetic wave with the plasma wave. Here, our plasma is<br />relativistic both in temperature and in streaming speed. A set of equations consisting of<br />scalar and vector potentials together with a third order equation for the enthalpy in<br />photon gas plasma is obtained analytically. Solutions with single-humped for the scalar<br />potential and single and double-humped for the vector potential profiles are illustrated<br />numerically. It is shown that the drifting velocity of moving solitons and plasma fluid<br />velocity both play an important role in the formation of the solutions. The results show<br />that the amplitude of the potentials increases for higher values of the plasma<br />temperatures for the region that the flow velocity of the plasma is larger than the solitary<br />wave velocity. For the region with larger amount of the soliton's velocity, the results<br />show opposite behavior. It is also found that in the region where the plasma fluid<br />velocity exceeds the soliton drifting velocity, all the solutions are excited at higher<br />temperatures relative to the other area.http://jopn.miau.ac.ir/article_3383_f6f818c727804390fc8438f53eac4160.pdf