Astrophysical Jets in relativistic regime: thermal and radiative driving

Abstract

Detailed study of relativistic jets around black hole sources, such as microquasars and active galactic nuclei (AGNs) is carried out and the impact of radiation and thermal driving is investigated. Across the chapters, the analysis is done in various regimes, flat space-time to curved space-time, fixed to variable adiabatic index relativistic equation of state, radial to non radial cross section of the jet, Thom- son (elastic) scattering to Compton scattering regime etc. Accretion disc plays auxiliary role for generating radiation field, as well as, geometrically shaping the jet near its base. The disc ra- diates through thermal, bremsstrahlung, synchrotron and inverse Compton processes. Jets are taken to be non rotating and axis- symmetric. Further, relativistic equation of state is used that takes care of variable adiabatic index at relativistic temperatures, as well as, composition of the flow. The radiative moments are calculated using their full relativistic transformations. Bending of photon path is also considered.