3 papers
gr-qc2024
Kerr--Newman Memory Effect
Marco Galoppo, Rudeep Gaur, Christopher Harvey-Hawes
We bring the Kerr--Newman spacetime into the Bondi--Sachs gauge by means of zero angular momentum, null geodesics. We compute the memory effect produced at the black hole horizon b…
gr-qc2024
Black holes, white holes, and near-horizon physics
Rudeep Gaur, Matt Visser
Black and white holes play remarkably contrasting roles in general relativity versus observational astrophysics. While there is overwhelming observational evidence for the existenc…
gr-qc2024
The Kerr Memory Effect at Null Infinity
Rudeep Gaur
We compute the memory effect due to a gravitational wave striking a Kerr black hole as seen by an observer at null infinity. This is done by working in Bondi--Sachs coordinates. It…