Illustration of a planetary system around a pulsar
Numéro d’image : 11885448
| Illustration of a planetary system around the pulsar PSR1257+12 (bright object at top right). Two planets with masses of 2.8 and 3.4 terrestrial masses were detected orbiting at a distance of 0.47 and 0.36 AU from the pulsar (1 AU = 1 Astronomical Unit - about 150 million km). The interaction between the planets and the pulsar was detected as a periodic change in the rotational period of the pulsar. Pulsars are neutron stars and their main feature is the emission of a flash of energy concentrated into a narrow beam. They are usually found in binary stellar systems and their strong gravitational force extracts gas (pink clouds) from their companion star. Reference: Nature Vol. 355 9-1-1992 pag. 145 | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Baum, Julian |
| Taille de l’image : | 5208 px × 3450 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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