The effect of dark matter halo shape on bar buckling and boxy/peanut bulges

It is well established that bars evolve significantly after they form in galaxy discs, often changing shape both and out of the disc plane. In some cases may bend or buckle plane resulting formation boxy/peanut/x-shape bulges. this paper we show dark matter halo affects bar buckling. We have performed N-body simulations buckling non-spherical halos traced evolution for 8 Gyr. find delayed oblate halos, whereas earlier prolate leading to However, duration first remains almost comparable. All models two events but most extreme exhibits three distinct features. Bars also signatures longest compared spherical halos. Since ongoing are rarely observed, our study suggests barred galaxies more rather than Our measurement BPX structures shows promote thickening heating