Abstract
Recent observations of the 10-GHz continuum1 have indicated that there is a pair of lobes having ridges of intensity extending from the galactic centre region in a direction perpendicular to the galactic plane. This observation has attracted considerable attention as it is clearly an indication of dynamic processes occurring at the centre of our Galaxy that are similar to those occurring in the nuclei of radio galaxies, though different in scale and in strength2. Here we interpret these lobes as being due to a mag-netodynamic acceleration mechanism in which the production and relaxation of the magnetic twist induced by the rotation of the contracting gas disk play a part. The plasma is accelerated in a conical cylinder with a helical velocity field, reproducing the observed feature of radio lobes.
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Uchida, Y., Shibata, K. & Sofue, Y. Origin of the galactic Centre lobes. Nature 317, 699–701 (1985). https://doi.org/10.1038/317699a0
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DOI: https://doi.org/10.1038/317699a0
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