High energy astronomy is the study of astronomical objects that release EM radiation of highly energetic wavelengths. It includes X-ray astronomy, gamma-ray astronomy, and extreme UV astronomy, as well as studies of neutrinos and cosmic rays. The physical study of these phenomena is referred to as high-energy astrophysics.
Some space and ground based telescopes that have studied high energy astronomy include the following:
- AGILE (spacecraft)
- XMM-Newton - X-ray Multi-Mirror Mission - Newton
- Chandra X-ray Observatory
- Suzaku (ASTRO-E)
- NASA's High Energy Astrophysics Science Archive Research Center
- http://www.cv.nrao.edu/fits/www/yp_high_energy.html - great compendium of links