Two neutron stars form a close binary system and orbit each other rapidly. If we watch this motion from a position in the plane of the binary orbits, we would expect to see evidence of:

Question

Quizplus · Accepted Answer

As the neutron stars orbit each other, they will cause a periodic Doppler shift in their radio emissions due to their motion towards and away from us. Additionally, the strong gravitational field of the neutron stars will cause a gravitational redshift in their emissions. Both of these effects would be visible to us if we were observing the system from the plane of the binary orbits.

Two Neutron Stars Form a Close Binary System and Orbit