Active galaxy types, illustration

Numéro d’image : 12971834
Active galaxy types, illustration
Active galaxy types, illustration. Active galaxies are those with an active galactic nucleus (AGN), driven by a central supermassive black hole. AGNs emit a range of non-stellar radiation, including radio, microwave, infrared, optical, ultra-violet, X-ray and gamma ray radiation. The features commonly seen in an AGN are the opaque torus, an accretion disc around the central supermassive black hole, and relativistic jets (blue), which are beams of ionised matter accelerated close to the speed of light. These beams are seen head-on at upper left, and edge-on at lower right, with intermediate alignments at upper right and lower left. The two galaxies at left have a 'brilliant' star-like core, while the two galaxies at right have a relatively dimmer 'bright' star-like core. Types of AGNs include radio-quiet and radio-loud, low-ionization nuclear emission-line regions (LINERs), Seyfert galaxies, quasars and blazars.
Licence : Droits gérés
Crédit: Science Photo Library / TIM BROWN
Taille de l’image : 4290 px × 4074 px
Model Release : Non requis
Property Release : Non requis
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