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Persistent gravitational wave observables: Nonlinear plane wave spacetimes
Éanna É. Flanagan, Alexander M. Grant, Abraham I. Harte +1
In the first paper in this series, we introduced "persistent gravitational wave observables" as a framework for generalizing the gravitational wave memory effect. These observables…
Conserved currents for electromagnetic fields in the Kerr spacetime
Alexander M. Grant, Éanna É. Flanagan
We construct a variety of conserved currents for test electromagnetic fields on a Kerr background. Our procedure, which involves the symplectic product for electromagnetism and sym…
Extensions of the asymptotic symmetry algebra of general relativity
Éanna É. Flanagan, Kartik Prabhu, Ibrahim Shehzad
We consider a recently proposed extension of the Bondi-Metzner-Sachs algebra to include arbitrary infinitesimal diffeomorphisms on a (2)-sphere. To realize this extended algebra as…
Spin Rotation by Earth's Gravitational Field in a "Frozen-Spin" Ring
Yuri F. Orlov, Eanna Flanagan, Yannis K. Semertzidis
Detailed calculations of spin rotation by the Earth's gravitational field in a frozen-spin ring are presented in three different coordinate systems and used (a) to show that the sy…