Han Cheng (Institute of Astronomy, NCU); Chung-Ming Ko (Institute of Astronomy, NCU; Department of Physics and Center for Complex Systems, NCU); Wan-Hsien Cho (Institute of Astronomy, NCU)
Fermi bubbles is a huge structure in our Galactic halo in the direction of the Galactic center. A possible origin of the bubbles is repeated star captures by the supermassive black hole at the Galactic center. We model the process as multiple energy outbursts (a.k.a. explosions) from a small volume into a layered exponential atmosphere. We simulate the formation of the bubbles using the package FLASH. We compare the evolution and morphology of the bubbles under different initial poloidal and toroidal magnetic field configurations.