Large-Scale Radio Structuers in the Galactic Center

Radio continuum observations of the galactic center region have revealed a number of vertical structures running across the galactic plane. Most of the vertical structures are reasonably attributed either to poloidal magnetic field or to energy release toward the halo. The relation of the continuum structures to the molecular gas rings and their vertical extension are also discussed. Some large-scale ejection features appear to have similarity to bubbles found in external galaxies. Keywords: Galactic center; Radio emission; Jets; Magnetic field