The exterior spacetime of relativistic stars in scalar-Gauss-Bonnet gravity
arXiv:1903.07779 · doi:10.1103/PhysRevD.100.044030
Abstract
The spacetime around compact objects is an excellent place to study gravity in the strong, nonlinear, dynamical regime where solar system tests cannot account for the effects of large curvature. Understanding the dynamics of this spacetime is important for testing theories of gravity and probing a regime which has not yet been studied with observations. In this paper, we construct an analytical solution for the exterior spacetime of a neutron star in scalar-Gauss-Bonnet gravity that is independent of the equation of state chosen. The aim is to provide a metric that can be used to probe the strong-field regime near a neutron star and create predictions that can be compared with future observations to place possible constraints on the theory. In addition to constructing the metric, we examine a number of physical systems in order to see what deviations exist between our spacetime and that of general relativity. We find these deviations to be small and of higher post-Newtonian order than previous results using black hole solutions. The metric derived here can be used to further the study of scalar-Gauss-Bonnet gravity in the strong field, and allow for constraints on corrections to general relativity with future observations.
arXiv comment13 pages, 9 figures. Updated to published version. Corrected typos
References in corpus (53)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Modified Gravity and Cosmology
- The Confrontation between General Relativity and Experiment
- A Massive Pulsar in a Compact Relativistic Binary
- The equation of state for nucleon matter and neutron star structure
- GW170817: Measurements of Neutron Star Radii and Equation of State
- Testing General Relativity with Present and Future Astrophysical Observations
- A unified equation of state of dense matter and neutron star structure
- Generalized G-inflation: Inflation with the most general second-order field equations
- Dilatonic Black Holes in Higher Curvature String Gravity
- Spontaneous scalarization of black holes and compact stars from a Gauss-Bonnet coupling
- The Equation of State of Hot, Dense Matter and Neutron Stars
- New Gauss-Bonnet black holes with curvature induced scalarization in the extended scalar-tensor theories
- A precise determination of angular momentum in the black hole candidate GRO J1655-40
- Black hole hair in generalized scalar-tensor gravity
- Evasion of No-Hair Theorems and Novel Black-Hole Solutions in Gauss-Bonnet Theories
- kHz Quasi Periodic Oscillations in Low Mass X-ray Binaries as Probes of General Relativity in the Strong Field Regime
- Measuring the neutron star equation of state using X-ray timing
- Black hole hair in generalized scalar-tensor gravity: An explicit example
- Probes and Tests of Strong-Field Gravity with Observations in the Electromagnetic Spectrum
- Gravitational Bending of Light Near Compact Objects
- Non-Spinning Black Holes in Alternative Theories of Gravity
- Dilatonic Black Holes with Gauss-Bonnet Term
- Charged black holes in effective string theory
- Black-Hole Solutions with Scalar Hair in Einstein-Scalar-Gauss-Bonnet Theories
- Slowly-Rotating Black Holes in Einstein-Dilaton-Gauss-Bonnet Gravity: Quadratic Order in Spin Solutions
- Slowly rotating black holes in alternative theories of gravity
- Black holes and binary mergers in scalar Gauss-Bonnet gravity: scalar field dynamics
- On the stability of scalarized black hole solutions in scalar-Gauss-Bonnet gravity
- Compact stars in alternative theories of gravity. Einstein-Dilaton-Gauss-Bonnet gravity
- Anisotropic stars as ultracompact objects in General Relativity
- Asymmetric nuclear matter and neutron star properties
- Challenging the Presence of Scalar Charge and Dipolar Radiation in Binary Pulsars
- Surface Emission from Neutron Stars and Implications for the Physics of their Interiors
- New Constraint on Scalar Gauss-Bonnet Gravity and a Possible Explanation for the Excess of the Orbital Decay Rate in a Low-Mass X-ray Binary
- Determining neutron star masses and radii using energy-resolved waveforms of X-ray burst oscillations
- Quadrupole Moments of Rapidly Rotating Compact Objects in Dilatonic Einstein-Gauss-Bonnet Theory
- Neutron star solutions with curvature induced scalarization in the extended Gauss-Bonnet scalar-tensor theories
- Pulsars as probes of gravity and fundamental physics
- Difference Frequency of Kilohertz QPOs Not Equal to Half the Burst Oscillation Frequency in 4U 1636-53
- Post-Newtonian expansion for Gauss-Bonnet Gravity
- Classification of shift-symmetric Horndeski theories and hairy black holes
- Reducing the two-body problem in scalar-tensor theories to the motion of a test particle : a scalar-tensor effective-one-body approach
- Bayesian parameter constraints for neutron star masses and radii using X-ray timing observations of accretion-powered millisecond pulsars
- Testing Einstein-dilaton-Gauss-Bonnet gravity from the reflection spectrum of accreting black holes
- The General Relativistic Two Body Problem and the Effective One Body Formalism
- 1974: the discovery of the first binary pulsar
- Neutron star pulse profiles in scalar-tensor theories of gravity
- Pulse profiles from a pulsar in scalar-tensor gravity
- Astrophysical applications of the post-Tolman-Oppenheimer-Volkoff formalism
- Modeling pulse profiles of accreting millisecond pulsars
- Sensitivity of pulsar light curves to spacetime geometry and efficacy of analytic approximations
- Searching for X-ray Pulsations from Neutron Stars Using NICER
Cited by in corpus (7)
- Improved gravitational-wave constraints on higher-order curvature theories of gravity
- Spontaneous scalarization
- Large and Ultra-compact Gauss-Bonnet Black Holes with a Self-interacting Scalar Field
- On the Existence of Solutions with a Horizon in Pure Scalar-Gauss-Bonnet Theories
- Tidal Deformabilities of Neutron Stars in scalar-Gauss-Bonnet Gravity and Their Applications to Multimessenger Tests of Gravity
- Rotating black holes in valid vector-tensor theories after GW170817
- Numerical Approach to the Exterior Solution of Spherically Symmetric and Static Configuration in Scalar-Tensor Theories