6533b81ffe1ef96bd1277be7
RESEARCH PRODUCT
Multiple expansions for energy and momenta carried by gravitational waves
Miguel AlcubierreDar ´ õO NunezMilton RuizRyoji Takahashisubject
AstrofísicaPhysicsAngular momentumPhysics and Astronomy (miscellaneous)Gravitational waveScalar (physics)FOS: Physical sciencesSpherical harmonicsGeneral Relativity and Quantum Cosmology (gr-qc)General Relativity and Quantum CosmologyIsolated systemGravitationQuantum electrodynamicsAstronomiaMultipole expansionEnergy (signal processing)description
We present expressions for the energy, linear momentum and angular momentum carried away from an isolated system by gravitational radiation based on spin-weighted spherical harmonics decomposition of the Weyl scalar $\Psi_4$. We also show that the expressions derived are equivalent to the common expressions obtained when using a framework based on perturbations of a Schwazschild background. The main idea is to collect together all the different expressions in a uniform and consistent way. The formulae presented here are directly applicable to the calculation of the radiated energy, linear momentum and angular momentum starting from the gravitational waveforms which are typically extracted from numerical simulations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-01-01 | General Relativity and Gravitation |