Affiliation: Aryabhatta Research Institute of Observational Sciences
Conference ID : ASI2022_167
Title : Radiatively driven bipolar outflows
Authors : Raj Kishor Joshi, Indranil Chattopadhyay
Abstract Type: Poster
Abstract Category : Extragalactic Astronomy
Abstract : Astrophysical jets are collimated plasma outflows. The advent of radio telescopes suggested that the jets are very common and can be associated with a wide range of objects like active galactic nuclei (AGNs), microquasars, young stellar objects (YSOs), and neutron stars but the composition, formation, and collimation of jets still remain as open questions. In this study, we have made an attempt to understand the dynamics of the jet which travels through the intense radiation field of the accretion disc. We use a total variation diminishing routine (TVD) to study the time-dependent nature of the jet and the thermodynamics is described by a variable adiabatic index equation of state. We show that the interaction of jet plasma with the radiation field can efficiently accelerate the jets. We also show that the time-dependent nature of the accretion disc directly influences the jet dynamics. If the radiation field is strong enough it can also produce the non-stationary shocks closer to the jet base which are often used to explain the high energy power-law emissions.