File:Artist’s impression of the PSR J0348+0432.jpg
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Summary
[edit]DescriptionArtist’s impression of the PSR J0348+0432.jpg |
English: This artist’s impression shows the exotic double object that consists of a tiny, but very heavy neutron star that spins 25 times each second, orbited every two and a half hours by a white dwarf star. The neutron star is a pulsar named PSR J0348+0432 that is giving off radio waves that can be picked up on Earth by radio telescopes. Although this unusual pair is very interesting in its own right, it is also a unique laboratory for testing the limits of physical theories.
This system is radiating gravitational radiation, ripples in spacetime. Although these waves (shown as the grid in this picture) cannot be yet detected directly by astronomers on Earth they can be sensed indirectly by measuring the change in the orbit of the system as it loses energy. As the pulsar is so small the relative sizes of the two objects are not drawn to scale.Deutsch: Diese künstlerische Darstellung zeigt ein exotisches Doppelsternsystem, das aus einem winzigen, aber sehr massereichen Neutronenstern besteht, der sich 25 mal pro Sekunde um sich selber dreht und alle zweieinhalb Stunden von einem Weißen Zwerg umkreist wird. Der Neutronenstern ist ein Pulsar, der Radiowellen abstrahlt, die dann auf der Erde mit Hilfe von Radioteleskopen empfangen werden können. Obwohl dieses ungewöhnliche Paar an sich schon sehr interessant ist, stellt es zusätzlich ein einzigartiges Testobjekt zur Überprüfung der Grenzen physikalischer Theorien dar.
Das Doppelsternsystem strahlt Gavitationswellen ab, sozusagen kleine Rippel in der Raumzeit. Obwohl diese Wellen von Astronomen auf der Erde nicht direkt nachgewiesen werden können, können sie indirekt vermessen werden, indem man die kleinen Veränderungen in der Umlaufbahn des Systems durch den Energieverlust misst. Da der Pulsar sehr klein ist, sind die relativen Größen der beiden Objekte nicht maßstabsgetreu dargestellt. |
Date | |
Source | http://www.eso.org/public/images/eso1319a/ |
Author | ESO/L. Calçada |
Other versions | https://www.flickr.com/photos/esoastronomy/8692657254/ |
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Online copyright statement | |
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Credit/Provider | ESO/L. Calçada |
Source | European Southern Observatory |
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Short title |
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Image title |
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Date and time of data generation | 20:00, 25 April 2013 |
Copyright status | Copyright status not set |
Keywords | PSR J0348+0432 |
Contact information |
Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |