Hey Jim, I did some more looking into this and I found that this observation is also found in radio waves but what is most interesting is the shape of these "lobes":
As they distinctly trail to one side, I was immediately reminded of the Earth's electromagnetic field as it is affected by the sun:
Source
This would suggest that the Milky Way's central black hole's electromagnetic field is influenced the same way by an even more massive object that it orbits. That object, too, would radiate an equivalent "solar wind" that would effectively push the electromagnetic field of our galaxy in a similar manner. Notably, radio waves are less energetic than x-rays, and thereby are composed of less massive particles, and so they would be more easily influenced by the "solar wind".
If we look at the Fermi all-sky survey of the X-ray "bubbles", they too are somewhat "bent" to the same side as the radio waves but it is less substantial:
This gives credence to the concept that this is an observation of portions of our galaxy's black hole's electromagnetic field, which is composed of a wide range of different masses of particles. Lower mass particles such as radio waves are more easily influenced and their trajectory bends sooner, creating "inner" rings of a given electromagnetic field (such as the image of Earth's above). Higher mass particles are influenced by gravity less and are able to travel further away, alike to the outer rings of Earth's electromagnetic field.
Another interesting piece of information is that these "lobes" and "bubbles" are known to be "magnetized", which makes sense if they are an electromagnetic field.
With the radio wave image, I am much more confident that these are portions of the electromagnetic field of our galaxy's supermassive black hole actually being directly observed. Thanks again for pointing this out to me! I will let you know if I come across more information. I may do a full post on this topic here on Steemit once I have digged some more and reference you and your question, if that's ok. :)
RE: Electromagnetism: A Result of Gravity