Speaker
Description
We use numerical simulations to study the evolution of merging galaxies. This study focuses on the AGN-driven feedback mechanism which could be responsible for outflow gas on kpc scales observed in Seyfert galaxies. The galaxy's initial conditions were created to mimic observational properties of a galaxy NGC 5252. The object is one of the interesting seyfert galaxies, showing an extended [OIII] emission out to ~10 kpc scales and appears to contain an off-nucleus ultraluminous X-ray (ULX) source, CXO J133815.6+043255, with optical spectral properties similar to Low-Luminosity AGNs (LLAGNs). The high angular resolution very long-baseline interferometry (VLBI) observations have also showed that it is a promising candidate of dual radio-emitting AGN system. Furthermore, the off-nucleus ULX component in the NGC 5252 is believed to be a stripped remnant of a merging dwarf. To study the formation and evolution of such a system, the supermassive black hole (SMBH) accretion physics module is employed in the smoothed-particle hydrodynamics (SPH) simulations of merging galaxies, using GIZMO code. We will report on the progress of our on-going study which will be focusing on possible configurations and properties of the merging galaxies, the evolutions of the merging pair and AGN feedback that results in the observed properties of the system.
