Artwork of a gamma-ray burster
Bildnummer 11780858
| This image represents a new type of gamma-ray burster (GRB),which lasts much longer than those found previously. Until now,GRBs created during the death throes of massive stars,or when stars collide were not known to last more than a few minutes. But in a new class of GRB the event goes on for far longer,up to several hours. These are thought to be created when a very massive red supergiant star (foreground),hundreds of times heavier and bigger than the Sun,collapses to form a black hole in a supernova explosion. Jets of rapidly moving subatomic particles pierce the star's poles just before collapse,and erupt into space. In the more usual GRBs,the progenitor is a blue supergiant (background),still massive but puny compared to red supergiant stars. The huge size of the new red supergiant progenitors are what enables to burst to last so long | |
| Lizenzart: | Lizenzfrei |
| Credit: | Science Photo Library / Garlick, Mark |
| Modell-Rechte: | nicht erforderlich |
| Eigentums-Rechte: | nicht erforderlich |
| Restrictions: | - |
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