249 citations · 2k across the 90 of their papers we have counts for
55 papers · 1 filter
Properties of Quasi-local mass in binary black hole mergers
Daniel Pook-Kolb, Bowen Zhao, Lars Andersson +2
Identifying a general quasi-local notion of energy-momentum and angular momentum would be an important advance in general relativity with potentially important consequences for mat…
Spin Hall effects in the sky
Lars Andersson, Marius A. Oancea
In many areas of physics, the propagation of wave packets carrying intrinsic angular momentum is generally influenced by spin-orbit interactions. This is the main mechanism behind…
Gravitational Instantons and special geometry
Steffen Aksteiner, Lars Andersson
The Chen-Teo gravitational instanton is an asymptotically flat, toric, Ricci flat family of metrics on , that provides a counterexample to the…
Nonlinear radiation gauge for near Kerr spacetimes
Lars Andersson, Thomas Bäckdahl, Pieter Blue +1
In this paper, we introduce and explore the properties of a new gauge choice for the vacuum Einstein equation inspired by the ingoing and outgoing radiation gauges (IRG, ORG) for t…
On the geometry of Petrov type II spacetimes
Steffen Aksteiner, Lars Andersson, Bernardo Araneda +1
In general, geometries of Petrov type II do not admit symmetries in terms of Killing vectors or spinors. We introduce a weaker form of Killing equations which do admit solutions. I…
Propagation of polarized gravitational waves
Lars Andersson, Jérémie Joudioux, Marius A. Oancea +1
The propagation of high-frequency gravitational waves can be analyzed using the geometrical optics approximation. In the case of large but finite frequencies, the geometrical optic…