2005/06/27 by I. H. Stairs, A. J. Faulkner, A. G. Lyne +16 · 3 citations
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #Geophysics and Gravity Measurements #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1086/432526
published as Astrophys.J.632:1060-1068,2005 · 8 pages; accepted to ApJ. Small changes to parameters from including correct Parkes clock corrections; changes/corrections to Figures 1, 4 and 5; minor changes to text and references. The limit on Delta has increased from 0.0055 to 0.0056
arxiv created 2005/06/27 · openalex publication_date 2005/10/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We report the discovery of three binary millisecond pulsars during the Parkes Multibeam Pulsar Survey of the Galactic plane. The objects are highly recycled and are in orbits of many tens of days about low-mass white dwarf companions. The eccentricity of one object, PSR J1853+1303, is more than an order of magnitude lower than predicted by the theory of convective fluctuations during tidal circularization. We demonstrate that under the assumption that the systems are randomly oriented, current theoretical models of the core-mass-orbital-period relation for the progenitors of these systems likely overestimate the white dwarf masses, strengthening previous concerns about the match of these models to the data. The new objects allow us to update the limits on the violation of relativistic equivalence principles to 95% confidence upper limits of 5.6 × 10 -3 for the strong equivalence principle parameter |Δ| and 4.0 × 10 -20 for the Lorentz-invariance/momentum-conservation parameter | 3 |.