A characteristic observable signature of preferred frame effects in relativistic binary pulsars

Abstract

In this paper we develop a consistent, phenomenological methodology to measure preferred-frame effects (PFEs) in binary pulsars that exhibit a high rate of periastron advance. We show that in these systems the existence of a preferred frame for gravity leads to an observable characteristic `signature' in the timing data, which uniquely identifies this effect. We expand the standard Damour-Deruelle timing formula to incorporate this `signature' and show how this new PFE timing model can be used to either measure or constrain the parameters related to a violation of the local Lorentz invariance of gravity in the strong internal fields of neutron stars. In particular, we demonstrate that in the presence of PFEs we expect a set of the new timing parameters to have a unique relationship that can be measured and tested incontrovertibly. This new methodology is applied to the Double Pulsar, which turns out to be the ideal test system for this kind of experiments.The currently available dataset allows us only to study the impact of PFEs on the orbital precession rate, d omega/dt, providing limits that are, at the moment, clearly less stringent than existing limits on PFE strong-field parameters. However, simulations show that the constraints improve fast in the coming years, allowing us to study all new PFE timing parameters and to check for the unique relationship between them. Finally, we show how a combination of several suitable systems in a "PFE antenna array", expected to be availabe for instance with the Square-Kilometre-Array (SKA), provides full sensitivity to possible violations of local Lorentz invariance in strong gravitational fields in all directions of the sky. This PFE antenna array may eventually allow us to determine the direction of a preferred frame should it exist.

Accepted for publication in MNRAS, 12 pages, 5 figures, figures 3 and 5 in reduced quality due to size limitations

References in corpus (16)

• The Confrontation between General Relativity and Experiment
• Tests of general relativity from timing the double pulsar
• Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Temperature Analysis
• An increased estimate of the merger rate of double neutron stars from observations of a highly relativistic system
• A Double-Pulsar System - A Rare Laboratory for Relativistic Gravity and Plasma Physics
• Tensor-scalar gravity and binary-pulsar experiments
• Signals for Lorentz Violation in Post-Newtonian Gravity
• Testing General Relativity with Pulsar Timing
• Testing gravity to second post-Newtonian order: a field-theory approach
• The Dipole Observed in the COBE DMR Four-Year Data
• Strong-Field Tests of Gravity Using Pulsars and Black Holes
• General Relativistic Geodetic Spin Precession in Binary Pulsar B1913+16: Mapping the Emission Beam in Two Dimensions
• Pulsars as Tools for Fundamental Physics and Astrophysics
• Probing the Eclipse of J0737-3039A with Scintillation
• The Formation of the Double Pulsar PSR J0737-3039A/B
• Green Bank Telescope Measurement of the Systemic Velocity of the Double Pulsar Binary J0737-3039 and Implications for its Formation

Cited by in corpus (14)

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• Modelling annual and orbital variations in the scintillation of the relativistic binary PSR J1141$-$6545
• Interstellar Scintillation of the Double Pulsar J0737$-$3039
• Tests of gravitational symmetries with radio pulsars
• Constraining the Preferred-Frame ${\alpha }_1$, ${\alpha }_2$ parameters from Solar System planetary precessions
• Testing velocity-dependent CPT-violating gravitational forces with radio pulsars
• A Rosetta Stone for Parameterized Tests of Gravity
• Matter-Sector Lorentz Violation in Binary Pulsars
• Testing the Gravitational Weak Equivalence Principle in the Standard-Model Extension with Binary Pulsars
• New limits on the local Lorentz invariance violation of gravity in the Standard-Model Extension with pulsars
• New Constraints on Preferred Frame Effects from Binary Pulsars