e Rosita and Fermi bubbles are a mystery.

 Both sides of the Milky Way's giant Sgr A* black hole are two bubbles, two-layer bubble constructions. The Fermi Bubbles are actually inside a larger e Rosita bubble. Fermi bubbles are extremely bright in gamma-ray frequency. Same way e Rosita bubbles are visible in high-energy gamma-area, but otherwise, those bubbles send energy that is hard to detect. 

There is no IR or visible light interaction and that makes those bubbles interesting. So we can think that those bubbles are involving energy mainly in kinetic form. The gamma-ray emission from those bubbles is forming when the internal structure's shell impacts the outer structure. And that thing forms very high energy gamma-ray emission. 

Maybe both of those bobble formations formed in some eruption or series of eruptions a long time ago. During those eruptions Sgr A* send particle constellations around them. Then the magnetic or gravitational fields turned those particle constellations to the form. That looks like the sun's protuberance.

 

"A superposition of an image of the Milky Way, taken by the European Space Agency’s Gaia space observatory, and a visualization of the simulations of the eRosita and Fermi bubbles. A new study published in Nature Astronomy has provided further insight into the properties of eRosita bubbles, giant structures of high-energy gas extending above and below the Milky Way galaxy’s center. Credit: ESA/Gaia/DPAC" (ScitechDaily.com/Galactic Bubbles: Unexpected Complexity of the Milky Way’s Mysterious Structures)

Another explanation could be that there is a cosmic void inside the e Rosita and Fermi bubbles. In that case, the particles travel inside the cosmic void with speed. That is higher than it's outside the void. When particles are touching the most out part of the void, they slow their speed. During that process, those particles must send their extra energy somewhere, and maybe that explains the gamma-ray emission. 

In that theorem, another question is what keeps those e Rosita and Fermi Bubbles in one entirety.

Why doesn't radiation from the inner structure blow those outer structures away? We can also see two belt-looking structures in the bubbles. They seem traveling away from Sgr A* by following a straight line. And they also send very high power emission radiation. In the middle of those bubbles is the high-energy radiation belt of Sgr A*. 

Is it gravitation, electromagnetic interaction, or a combination of the gravitation and magnetic fields of Sgr A*? Are those bubbles follow the gravitational and magnetic fields of the supermassive black holes? 

When those traveling particle structures are traveling in opposite directions. They are sending extremely powerful gamma-ray emissions. There is the possibility that the powerful eruption of the black holes can form a warp- bubble or some kind of cosmic void. If high-speed particles travel inside that kind of bubble. Their speed can turn higher than it normally can be. 

So when the particles travel in the cosmic void near that void's outer point. Their speed starts to slow. In that case, they will transfer their energy to a lower energy level quantum field. And then during that process, the particles send radiation that could be gamma-ray. This could be another explanation for the strange clusters around the Milky Way. The e Rosita and Fermi bubbles are entirety. The mystery is do they have same or different origins? 

https://scitechdaily.com/galactic-bubbles-unexpected-complexity-of-the-milky-ways-mysterious-structures/