High-velocity outflows from the GC, or a misinterpretation?

Radio emission map made with the 64 meter Parkes Radio Telescope

A group of astronomers has recently reported radio telescope data which they claim is evidence of an immense high velocity outflow or “geyser” of magnetized plasma from the center of the Milky Way whose origin they attribute to starburst activity in the Galaxy’s central region.  They report their results in the Jan. 2 issue of Nature magazine.  Also see the following news articles:



I have received several emails from people inquiring if this may be evidence of a past Galactic core outburst similar to that discussed in a previous posting on the Fermi bubbles.  I believe that this is not evidence of a Galactic core outflow.  Neither do I believe that it is evidence of a geyser-like starburst outflow from the center of the Milky Way as the authors of the Nature paper claim.  In fact, believe that this emission has nothing to do with the Galactic center.

For more on this story visit the Starburst Superwave Forum