A perturbative 3D Green's-function framework yields Born and post-Born weak-field GW lensing, including finite-distance and O(G^{2}) GR corrections controlled by GM ω b/χ_eff.
The third wheel: ringdown and lensing of triple systems
1 Pith paper cite this work. Polarity classification is still indexing.
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abstract
Triple systems have progressively been recognized as ubiquitous in our universe and provide a good testing ground for wave generation and propagation in nontrivial environments. We study the dynamics of triple systems in a fully nonlinear setting. In particular, we analyze numerical relativity simulations of head-on collisions of black holes in the presence of a companion. We show evidence for Doppler and gravitational redshift in the ringdown, and clear signs of amplification by lensing. In certain cases, we also show the appearance of a second image, with hints of resonant mode excitation. Our results pave the way for the understanding of mergers in the vicinity of massive companions. Even in extreme setups we do not find collapse to black holes from lensed gravitational radiation.
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gr-qc 1years
2026 1verdicts
ACCEPT 1representative citing papers
citing papers explorer
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Three-dimensional wave optics for weak-field lensing of gravitational waves
A perturbative 3D Green's-function framework yields Born and post-Born weak-field GW lensing, including finite-distance and O(G^{2}) GR corrections controlled by GM ω b/χ_eff.