Seyfert galaxy. Optical image of the Seyfert galaxy NGC 4945,an edge-on spiral galaxy in the constellation Centaurus. Seyfert galaxies have an unusually bright nucleus. The nucleus of this galaxy is a Seyfert type 2 nucleus,which does not appear unusually bright at visible wavelengths,but is a powerful emitter of infrared radiation. The power source for a Seyfert nucleus is thought to be a large black hole. A dark band of dust is seen running from upper left to centre in this galaxy | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Celestial Image Co. |
Taille de l’image : | 2047 px × 2047 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |