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

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

2006-05-15

arxiv.org/abs/astro-ph/0605375v1

Astrophys.J. 644 (2006) L113-L116

Astronomy and Astrophysics

Astrophysics

12 pages, 4 figures, accepted for publication in ApJL

Scientific paper

10.1086/505742

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 $(-3.95 \pm 0.13) \times 10^{-12}$, consistent with the prediction of general relativity at the $\sim 3 %$ level. We find the pulsar mass to be $m_p = (1.358 \pm 0.010) M_\odot$ and the companion mass $m_c = (1.354 \pm 0.010) M_\odot$. 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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