pith. machine review for the scientific record. sign in

arxiv: 1201.6067 · v1 · submitted 2012-01-29 · 🌀 gr-qc · astro-ph.HE

Recognition: unknown

Revising the multipole moments of numerical spacetimes, and its consequences

George Pappas , Theocharis A. Apostolatos
Authors on Pith no claims yet
classification 🌀 gr-qc astro-ph.HE
keywords momentsmultipolemetricbeennumericalanalyticbecauseconsequences
0
0 comments X
read the original abstract

Identifying the relativistic multipole moments of a spacetime of an astrophysical object that has been constructed numerically is of major interest, both because the multipole moments are intimately related to the internal structure of the object, and because the construction of a suitable analytic metric that mimics a numerical metric should be based on the multipole moments of the latter one, in order to yield a reliable representation. In this note we show that there has been a widespread delusion in the way the multipole moments of a numerical metric are read from the asymptotic expansion of the metric functions. We show how one should read correctly the first few multipole moments (starting from the quadrupole mass-moment), and how these corrected moments improve the efficiency of describing the metric functions with analytic metrics that have already been used in the literature, as well as other consequences of using the correct moments.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Testing the Kerr hypothesis beyond the quadrupole with GW241011

    gr-qc 2026-04 unverdicted novelty 8.0

    GW241011 data shows consistency with Kerr black holes for both quadrupole and octupole moments and delivers the first observational bounds on spin-induced octupole deviations.

  2. Tests of General Relativity with Binary Black Holes from the second LIGO-Virgo Gravitational-Wave Transient Catalog

    gr-qc 2020-10 accept novelty 5.0

    No evidence for deviations from general relativity is found in LIGO-Virgo binary black hole events, with improved constraints on waveform parameters, graviton mass, and ringdown properties.

  3. New symmetry in higher curvature spacetimes

    physics.gen-ph 2026-03 unverdicted novelty 3.0

    Symmetries identified in Einstein-Maxwell and imperfect fluid spacetimes extend to higher curvature spacetimes.

  4. Tests of General Relativity with GWTC-3

    gr-qc 2021-12 accept novelty 3.0

    No evidence for physics beyond general relativity is found in the analysis of 15 GW events from GWTC-3, with consistency in residuals, PN parameters, and remnant properties.