Measurement of Orbital Decay in the Double Neutron Star Binary PSR B2127+11C
B. A. Jacoby, P. B. Cameron, F. A. Jenet, S. B. Anderson, R. N. Murty, S. R. Kulkarni
Abstract
We report the direct measurement of orbital period decay in the double neutron star pulsar system PSR B2127+11C in the globular cluster M15 at the rate of (-3.95 0.13) × 10-12, consistent with the prediction of general relativity at the 3 % level. We find the pulsar mass to be mp = (1.358 0.010) M and the companion mass mc = (1.354 0.010) M. We also report long-term pulse timing results for the pulsars PSR B2127+11A and PSR B2127+11B, including confirmation of the cluster proper motion.
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