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# Title: Timing Measurements of the Relativistic Binary Pulsar PSR B1913+16

Abstract: We present results of more than three decades of timing measurements of the first known binary pulsar, PSR B1913+16. Like most other pulsars, its rotational behavior over such long time scales is significantly affected by small-scale irregularities not explicitly accounted for in a deterministic model. Nevertheless, the physically important astrometric, spin, and orbital parameters are well determined and well decoupled from the timing noise. We have determined a significant result for proper motion, $\mu_{\alpha} = -1.43\pm0.13$, $\mu_{\delta}=-0.70\pm0.13$ mas yr$^{-1}$. The pulsar exhibited a small timing glitch in May 2003, with ${\Delta f}/f=3.7\times10^{-11}$, and a smaller timing peculiarity in mid-1992. A relativistic solution for orbital parameters yields improved mass estimates for the pulsar and its companion, $m_1=1.4398\pm0.0002 \ M_{\sun}$ and $m_2=1.3886\pm0.0002 \ M_{\sun}$. The system's orbital period has been decreasing at a rate $0.997\pm0.002$ times that predicted as a result of gravitational radiation damping in general relativity. As we have shown before, this result provides conclusive evidence for the existence of gravitational radiation as predicted by Einstein's theory.
 Comments: Published in APJ, 722, 1030 (2010) Subjects: Astrophysics of Galaxies (astro-ph.GA); General Relativity and Quantum Cosmology (gr-qc) Journal reference: Astrophys.J.722:1030-1034,2010 DOI: 10.1088/0004-637X/722/2/1030 Cite as: arXiv:1011.0718 [astro-ph.GA] (or arXiv:1011.0718v1 [astro-ph.GA] for this version)

## Submission history

From: Joel Weisberg [view email]
[v1] Tue, 2 Nov 2010 19:48:56 GMT (260kb,D)
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