Active galactic nuclei jets simulated with smoothed particle hydrodynamics

ABSTRACT Simulations of active galactic nuclei (AGN) jets have thus far been performed almost exclusively using grid-based codes. We present the first results from hydrodynamical tests AGN jets, and their interaction with intracluster medium (ICM), smoothed particle hydrodynamics as implemented in swift code. launch these into a constant-density ICM, well ones power-law density profile. also vary jet power, velocity, opening angle, numerical resolution. In all cases we find broad agreement between our theoretical predictions for lengths lobes they inflate, radii lobes. The evolve ballistically, then transition to self-similar phase, during which expand fashion (keeping constant shape). this phase kinetic thermal energies shocked ICM are fractions total injected energy. standard simulation, two thirds initially energy is transferred by time turned off, mainly through bow shock. Of that, $70{{\%}}$ form, indicating that shock does not fully efficiently thermalize while active. At resolutions typical large cosmological simulations (mgas ? 107 M?), shape close an accuracy $15{{\%}}$. This indicates basic physics jet-inflated can be correctly simulated even at such (?500 particles per jet).