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How Does the Universe Generate Gamma-Rays?

Professor
There are several different ways, or physical processes, that happen in the Universe (as well as, of course, on Earth!) which produce gamma-rays. These include:
  1. a high-energy particle can collide with another particle,
  2. a particle can collide and annihilate with its anti-particle,
  3. an element can undergo radioactive decay, or
  4. a charged particle can be accelerated.

Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Nicholas White (Director), within the Laboratory for High Energy Astrophysics at NASA's Goddard Space Flight Center.

The Imagine Team
Project Leader: Dr. Jim Lochner
All material on this site has been created and updated between 1997-2004.

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