Trümper, Joachim Max-Planck-Institut Für Extraterrestrische Physik, Garching, Germany.
- ROSAT mission
- Nuclear-burning white dwarfs
- Supernova remnants
- Neutron stars
- Galaxies and active galactic nuclei
- Clusters of galaxies
- Additional Readings
In recent decades the scope of observational astronomy has extended over the entire electromagnetic spectrum, and now ranges from radio waves to high-energy photons with teraelectronvolt (1 TeV = 1012 eV) energies. The different bands reveal different aspects of the universe. In the x-ray domain, at photon energies between 0.1 and 500 keV, thermal radiation from high-temperature plasmas or nonthermal radiation produced by relativistic electrons interacting with magnetic fields (synchrotron radiation) or intense photon fields (the inverse Compton effect) is observed.
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