General relativity in double-pulsar PSR J0737-3039A/B with spin effects, was investigated. It was observed that greatest effect on orbital motion in double-pulsar system is the periastron precession, which amounts to 16° • 90 yr-1. The total angular momentum of whole system was found to remain constant such that precession of spins indicates a precession of total orbital angular momentum. The precession measurement of orbital angular momentum is a cleaner test as any such precession is a definite signature of spin effects.
Publication Source (Journal or Book title)
Physical Review Letters
O'Connell, R. (2004). Proposed new test of spin effects in general relativity. Physical Review Letters, 93 (8) https://doi.org/10.1103/PhysRevLett.93.081103