Binary pulsar system

Our telescopes saw many dual star systems, here two star are orbiting between then their mass center. This two starts also rotates faster when the distance between is smaller, and this is one way to try to detect the gravitational waves specially if this pair is massive.

Also the sky have objects called pulsars, neutrons start that rotates fast and emits x-ray from the magnetic poles and can be thought to be like the lighthouses used to guide the pilots in the sea (close to the coast).

The Esa has a satellite to observe the x-ray sources called XMM-Newton. Last October this satellite saw something really interesting: a binary pulsar system. Interesting specially because the close impact effects of the emissions of each pulsar to the magnetosfere of the other. Have a nice read.