Approximate Spacetime for Neutron Stars
arXiv:1802.02439 · doi:10.1007/s10714-019-2530-5
Abstract
An approximate realistic metric representing the spacetime of neutron stars is obtained by perturbing the Kerr metric. This metric has five parameters, namely the mass, spin or angular momentum, mass quadrupole, spin octupole and mass hexadecapole. Moreover, a version of the Hartle-Thorne metric containing these parameters is constructed by means of a series transformation between these spacetimes and solving the Einstein field equations. The form of the Pappas metric in Schwarzschild spherical coordinates is found. The three relativistic multipole structures are compared.
References in corpus (6)
- Testing General Relativity with Present and Future Astrophysical Observations
- Realistic Exact Solution for the Exterior Field of a Rotating Neutron Star
- An accurate metric for the spacetime around neutron stars
- On the Post-linear Quadrupole-Quadrupole Metric
- Multipole Moments of numerical spacetimes
- Innermost stable circular orbits of a Kerr-like Metric with Quadrupole