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Figure 11. Left: An image of the core and bright knot in the core-jet in M81* at 22 GHz with a resolution of 0.4 mas, plus the spectral index between 22 GHz and 44 GHz. Center: fractional polarization of the system at 8.8 GHz plus polarization vectors. Right: measure proper motion of the knot (Wang et al. 2023, arXiv:2310.08902).
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