Artist’s impression of the pulsar PSR J0348+0432 and its white dwarf companion

This video is an artist’s impression of an 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 cannot be yet detected directly by astronomers on Earth they can be detected 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, and the timescales are not realistic.


ESO/L. Calçada

About the Video

Release date:25 April 2013, 20:00
Related releases:eso1319
Duration:30 s
Frame rate:30 fps

About the Object

Name:PSR J0348+0432
Type:Milky Way : Star : Evolutionary Stage : Neutron Star : Pulsar

Ultra HD (info)



Large QT
7.6 MB


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6.1 MB
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14.4 MB
Medium Flash
6.6 MB


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2.9 MB
Small QT
1.7 MB

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