142 citations · 315 across the 7 of their papers we have counts for
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gr-qc2011★ 35 cited
The geometry of sound rays in a wind
G. W. Gibbons, C. M. Warnick
We survey the close relationship between sound and light rays and geometry. In the case where the medium is at rest, the geometry is the classical geometry of Riemann. In the case…
gr-qc2011★ 2 cited
Optical Metrics and Projective Equivalence
Stephen Casey, Maciej Dunajski, Gary Gibbons +1
Trajectories of light rays in a static spacetime are described by unparametrised geodesics of the Riemannian optical metric associated with the Lorentzian spacetime metric. We inve…