X-ray and Gamma-ray properties of AGN: Results from XMM-Newton, Chandra and INTEGRAL Original Research Article

The X-ray observatories XMM-Newton and Chandra provided a wealth of exciting new results on active galaxies, and many more are expected to emerge soon from the Gamma-ray mission INTEGRAL. Chandra delivered X-ray images of outstanding detail, reaching subarcsecond spatial resolution for the first time in X-ray astronomy. XMM-Newton with its high sensitivity provided X-ray spectra of unprecedented signal/noise. Spectra are resolved in great detail with the spectrometers aboard XMM-Newton and Chandra for the first time. INTEGRAL is dedicated to imaging and spectroscopy in the X-ray and Gamma-ray regime up to 3 MeV with significantly improved sensitivity and resolution as compared to previous Gamma-ray missions. The X-ray and Gamma-ray imaging and spectral observations are greatly improving our understanding of the physical processes in the central region of active galaxies. Here, I give a review of recent X-ray and Gamma-ray results on Active Galactic Nuclei.