Could the huge gamma-ray bubbles that extend above and below the center of the Milky Way be a boundary of matter and antimatter, whose collision emits gamma rays?
Pranathi Swamy, Andhra Pradesh, India
Published: Monday, April 23, 2012
The only way to produce photons at energies much higher than about 1,000 MeV (which is solidly in the gamma-ray range) is to have protons moving at nearly the speed of light. Although weò??re still not positive what causes the Milky Wayò??s bubbles, matter-antimatter collisions are not a possibility.