Constraints on fourth order gravity from binary pulsar and gravitational waves

Abstract

We have earlier proposed a fourth order gravity model as a possible explanation for late time cosmic acceleration, and for flattened galaxy rotation curves. The model has a free length parameter whose value depends on the scale of the system under study (e.g. the whole Universe, a galaxy, or a compact binary pulsar). In the present work, we investigate the constraints imposed on the free model parameter by Hulse-Taylor binary pulsar data: periastron advance; and emission of gravitational waves and consequent period decay. It is shown that the model is consistent with these observations, provided the length parameter is bounded from above.

11 pages plus appendices (total 18 pages), 1 figure, 1 table, text modified, new calculations and references added, conclusions unchanged

References in corpus (20)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• The Confrontation between General Relativity and Experiment
• GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
• Modified teleparallel gravity: inflation without inflaton
• Tests of general relativity from timing the double pulsar
• The relativistic pulsar-white dwarf binary PSR J1738+0333 II. The most stringent test of scalar-tensor gravity
• The modified Newtonian dynamics-MOND-and its implications for new physics
• Piercing the Vainshtein screen with anomalous gravitational wave speed: Constraints on modified gravity from binary pulsars
• Multi-telescope timing of PSR J1518+4904
• Testing Theories of Gravitation Using 21-Year Timing of Pulsar Binary J1713+0747
• Constraining the Noncommutative Spectral Action via Astrophysical Observations
• Gravitational radiation from compact binary systems in screened modified gravity
• The Spatial Averaging Limit of Covariant Macroscopic Gravity - Scalar Corrections to the Cosmological Equations
• Gravitational Waves in the Spectral Action of Noncommutative Geometry
• Astrophysical constraints on extended gravity models
• Cosmic Inhomogeneities and the Average Cosmological Dynamics
• Modified Gravity and the Phantom of Dark Matter
• An Uneven Vacuum Energy Fluid as $\Lambda$, Dark Matter, MOND and Lens
• Modified gravity as a common cause for cosmic acceleration and flat galaxy rotation curves
• Cosmic Acceleration in a Model of Fourth Order Gravity

Cited by in corpus (2)

• Standard Sirens as a novel probe of dark energy
• Spin contribution to the perihelion precession in binary systems like OJ287: higher order corrections