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However, details of the magnetization dynamics within SHNOs have thus far not been addressed experimentally, due to the minute time and length scales involved. In this work, we present direct imaging of the magnetization dynamics within a single CoFeB\u2010based SHNO using time\u2010resolved scanning transmission x\u2010ray microscopy (TR\u2010STXM). Our measurements reveal that the magnon amplitude is strongest at the two constriction edges, with a pronounced asymmetry favoring one edge, and that the emitted spin waves (SWs) exhibit strongly anisotropic propagation. Micromagnetic simulations suggest that grain boundaries and the Dzyaloshinskii\u2013Moriya interaction (DMI) play a key role in both effects. 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