Precessing jets from a moving source and bright X-ray filaments in galaxy clusters

Abstract

We present hydrodynamical calculations carried out with the 3D YGUAZU-A code for a precessing jet model that is interacting with a plane parallel wind. This scenario describes an extragalactic jet in which the jet source is in,motion with respect to the surrounding intra-cluster medium. From the numerical results, synthetic emission maps and spectra in X-ray band were obtained. We compare these predictions with observations of the radio jets emanating from the radio-galaxy 4C 26.42 (in the Abell 1795 galaxy cluster). We find that the general morphology of the radio jets can be described by a point-symmetric precessing jet system interacting with a plane parallel wind (i.e., the intra-cluster medium flowing past the galaxy). We also find that our synthetic X-ray emission maps reproduce the observed large scale structures (with sizes on the order of tens of kpc).