Evidence of a vertical kinematic oscillation beyond the Radcliffe wave

The Radcliffe Wave (RW) is a recently discovered sinusoidal vertical feature of dense gas in the proximity Sun. In disk plane, it aligned with Local Arm. However, origin its undulation still unknown. This study constrains kinematics RW, using young stars and open clusters as tracers, explores possibility this oscillation being part more extended mode. We median velocity trends along RW extend further to region beyond it. discover kinematic wave Galaxy, distinct from warp, amplitude depending on age stellar population. perform similar analysis N-body simulation satellite massive Sagittarius dwarf galaxy impacting galactic disk. When projected spiral density induced by impact suggesting that both may be response an external perturbation. observed misaligned. It appears travelling radially, winding up faster than matched questioning origin. If responsible for wave, we predict existence dipole should form across measurable upcoming Gaia DR3 DR4.