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

Autor:	Fredrick A. Jenet, Rohan Murty, Bryan A. Jacoby, P. B. Cameron, Stuart Anderson, Shrinivas R. Kulkarni
Rok vydání:	2006
Předmět:	Physics Proper motion General relativity Astrophysics (astro-ph) Binary number FOS: Physical sciences Astronomy and Astrophysics Astrophysics Orbital decay Orbital period Neutron star Pulsar Space and Planetary Science Globular cluster
DOI:	10.48550/arxiv.astro-ph/0605375
Popis:	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. Comment: 12 pages, 4 figures, accepted for publication in ApJL
Databáze:	OpenAIRE
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