Chasing DRAGNs : a numerical investigation into the absence of plume structures in observations of double radiosources associated with galactic nuclei

Abstract

The formation of plume structures has long been a consequence of fluid modelling of extragalactic radio jets. Simulations performed to date, which have been executed with and without reflective boundary conditions along the equatorial plane, have exhibited these structures, without being able to explain their lack of prevalence in the observations. I have shown, through use of synthetic synchrotron emission images, that plumes should indeed exist in radio observations and suggest that, because of the extremely low energy content of the material in the plumes, these structures should be visible for any source given a low enough observation frequency.