The new cosmic gamma-ray background involves interesting data.

When we look at the cosmic gamma-ray background we can see that the major gamma-ray area is like the belt in the image. That thing causes interesting ideas like the existence of some kind of hyper-massive black hole in the center of the universe. If that hypothetical object exists that thing means that our galaxy is in the equatorial zone of the ball-shaped visible universe. The reason, why I made this conclusion is that normally black holes send gamma rays mainly from their poles. 

Gamma-rays are interesting things. They are at the highest energy level of known radiation in the electromagnetic spectrum. The short wavelength makes gamma-rays extremely penetrating. And the reason, why gamma-rays are hard to detect is that the particles that send this radiation send energy impulses very often. That causes a reaction where the particles that receive gamma-rays cannot decrease their energy level enough that they can send reflection radiation. The changes in the energy level of the receiving object happen in so short periods that the particle has no time to send photons. 

When gamma rays impact walls they rise the energy levels of the particles. And then gamma-rays act like the wind. That pushes electrons in opposite directions. That thing causes the tunneling effect that allows gamma-rays to travel through extremely thick walls. The thing that destroys the wall is free energy. When gamma-rays impact atoms and their quantum fields they rise those atoms' energy levels. All particles attempt to reach the minimum energy level, which is the same as their environment. 

"This animation shows a subset of the Large Area Telescope gamma-ray records now available for more than 1,500 objects in a new, continually updated repository. Over 90% of these sources are a type of galaxy called a blazar, powered by the activity of a supermassive black hole. Credit: NASA’s Marshall Space Flight Center/Daniel Kocevski" (ScitechDaily.com/NASA’s Fermi Space Telescope Captures Cosmic Fireworks in Dynamic Gamma-Ray Sky)

"First survey of the sky at energies above 1 GeV, collected by Fermi in three years of observation (2009 to 2011)".(Wikipedia/Gamma-ray astronomy)

"Diffuse sky Fermi–LAT’s five-year sky map, indicating the various diffuse components that make up 80% of all photons detected. Credit: NASA"(Cerncourier/Star-forming galaxies rule gamma-ray sky)

And in that process, particles send radiation. So the energy pumping to the system is not destructive. The thing that destroys the system is the energy impact that atoms release when energy pumping ends. That energy that comes from those atoms pushes them away from each other and that breaks the bonds between them. In gas, atoms have more space to move. 

If gamma-ray impact continues long enough it forms standing radiation between atoms. And if that energy pumping continues those standing waves push atoms away so sooner or later gamma-rays destroy the wall. The time how the wall can resist gamma-ray impulses depends on the absorption speed. Or how effectively energy transition to the wall happens. 

And when gamma-rays are impacting air molecules. That radiation pushes those atoms and molecules sideways. That decreases the energy level of those atoms more than in the case where they are in the lead or some other solid material. When air molecule moves away from gamma-ray it sends stronger reflection. That forms standing waves that catch gamma-rays. And then that reflection causes the effect that gamma-rays from outer space cannot travel through the atmosphere. 

https://cerncourier.com/a/star-forming-galaxies-rule-gamma-ray-sky/

https://scitechdaily.com/nasas-fermi-space-telescope-captures-cosmic-fireworks-in-dynamic-gamma-ray-sky/

https://en.wikipedia.org/wiki/Gamma-ray_astronomy