output
19922026
most citedGaia Data Release 2. Summary of the contents and survey properties

8.6k citations

Showing 2009 · gr-qcShow all

8 papers · 2 filters

gr-qc2009★ 84 cited

On an Expansion Method for Black Hole Quasinormal Modes and Regge Poles

Sam R. Dolan, Adrian C. Ottewill

We present a new method for determining the frequencies and wavefunctions of black hole quasinormal modes (QNMs) and Regge poles. The key idea is a novel ansatz for the wavefunctio…

gr-qc2009★ 34 cited

Transport Equation Approach to Calculations of Hadamard Green functions and non-coincident DeWitt coefficients

Adrian C. Ottewill, Barry Wardell

Building on an insight due to Avramidi, we provide a system of transport equations for determining key fundamental bi-tensors, including derivatives of the world-function, σ(x,x'),…

gr-qc2009★ 68 cited

Electromagnetic wave scattering by Schwarzschild black holes

Luís C. B. Crispino, Sam R. Dolan, Ednilton S. Oliveira

We analyze the scattering of a planar monochromatic electromagnetic wave incident upon a Schwarzschild black hole. We obtain accurate numerical results from the partial wave method…

gr-qc2009★ 10 cited

Generating Electromagnetic Waves from Gravity Waves in Cosmology

P. A. Hogan, S. O'Farrell

Examples of test electromagnetic waves on a Friedmann-Lemaitre-Robertson-Walker(FLRW) background are constructed from explicit perturbations of the FLRW space-times describing grav…

gr-qc2009★ 123 cited

Scattering of massless scalar waves by Reissner-Nordström black holes

Luis C. B. Crispino, Sam R. Dolan, Ednilton S. Oliveira

We present a study of scattering of massless planar scalar waves by a charged non-rotating black hole. Partial wave methods are applied to compute scattering and absorption cross s…

gr-qc2009★ 63 cited

Scattering of Sound Waves by a Canonical Acoustic Hole

Sam R. Dolan, Ednilton S. Oliveira, Luís C. B. Crispino

This is a study of a monochromatic planar perturbation impinging upon a canonical acoustic hole. We show that acoustic hole scattering shares key features with black hole scatterin…

gr-qc2009★ 26 cited

Pade Approximants of the Green Function in Spherically Symmetric Spacetimes

Marc Casals, Sam Dolan, Adrian Ottewill +1

We investigate the scalar Green function for spherically symmetric spacetimes expressed as a coordinate series expansion in the separation of the points. We calculate the series ex…

gr-qc2009★ 67 cited

Self-Force Calculations with Matched Expansions and Quasinormal Mode Sums

Marc Casals, Sam R. Dolan, Adrian C. Ottewill +1

We present the first application of the Poisson-Wiseman-Anderson method of matched expansions, to compute the self-force acting on a point particle moving in a curved spacetime. Th…