Measurement of Orbital Decay in the Double Neutron Star Binary PSR B2127+11C

2006/05/15 by B. A. Jacoby, P. B. Cameron, F. A. Jenet +3 · 1 citation
Physics and Astronomy · #astro-ph

paper · pdf · doi:10.1086/505742

published as Astrophys.J. 644 (2006) L113-L116 · 12 pages, 4 figures, accepted for publication in ApJL

arxiv created 2006/05/15 · arxiv updated 2009/12/01

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 m_p = (1.358 ± 0.010) M_\odot and the companion mass m_c = (1.354 ± 0.010) M_\odot. 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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