Gamma-ray burst. Artwork showing a possible mechanism for gamma-ray bursts,extremely powerful bursts of gamma radiation that flare and then disappear in a matter of seconds. The small body seen at centre represents a neutron star or a black hole - end product of the supernova explosion which marks the death of a massive star. In the explosion a tremendous amount of energy is channelled into two narrow beams. According to this theory,the gamma-ray burst is seen only when one of the two beams points towards the Earth. Other models for gamma-ray bursts involve the collision between two neutron stars or two black holes | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NASA |
Taille de l’image : | 2317 px × 1853 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |