AGN and TDE feedback in Galaxy Evolution

Bing-Chiao He^1,2*, Tzu-Hsiang Chao^1,2, Ken Chen², Kung-Yi Su^3,4

¹Physics, National Taiwan University, Taipei, Taiwan
²Institution of Astronomy and Astrophysics, Acamedia Sinica, Taipei, Taiwan
³TAPIR, California Institute of Technology, Pasadena, USA
⁴2Center for Computational Astrophysics, Flatiron Institute, New York, USA

* Presenter:Bing-Chiao He, email:bche@asiaa.sinica.edu.tw

Supermassive black holes (SMBHs) are tiny objects inside the centers of galaxies. Nevertheless, they have prominently influence on their host galaxies. In this poster, we study the combined effect of active galactic nuclei (AGN) feedback and tidal disruption event (TDE) feedback in the galaxy evolution. The goal of this research is to understand the realistic galaxies which have strong feedback. We use a cosmological code: GIZMO code to simulate the evolution of iso-disk galaxies with different kinds of feedback added and evolved for billions of years. We first compare the galaxies under no AGN feedback and the one with it. It pointed out that though AGN does provide heat and energy in bulk, the SFR wasn’t largely decreased. As for TDE feedback, owing to that both of the scales of energy and infected region of AGN and TDE are totally different, we used several approximate models, aiming to construct a physical TDE model for the galactic scale.
In addition, to discuss the effect of resolution and galactic mass to results, we examined simulations with initial conditions under different resolution and masses of galaxies.

Keywords: Galaxy, AGN, TDE, Galaxy Evolution