<scp>flash</scp>-light on the <scp>ring</scp>: hydrodynamic simulations of expanding supernova shells near supermassive black holes

The way supermassive black holes (SMBH) in galactic centers accumulate their mass is not completely determined. At large scales, it governed by encounters, inflows connected to spirals arms and bars, or due expanding shells from supernova (SN) explosions the central parts of galaxies. investigation latter process requires an extensive set gas dynamical simulations explore muti-dimensional parameter space needed frame phenomenon. aims this paper are extend our importance supernovae for inducing accretion onto a SMBH carry out comparison between fully hydrodynamic code Flash much less computationally intensive Ring, which uses thin shell approximation. We simulate 3D gravitational potential similar that Galactic Center with variety homogeneous turbulent environments. In media, we find convincing agreement Ring shapes equivalent radii throughout whole evolution until they become subsonic. highly inhomogeneous, there also good sizes shells, times first contact 1 pc sphere, where assume join flow. supports proposition SN occurring at galactocentric distance 5 typically drives - 3 $M_\odot$ into around center.