81 citations · 491 across the 22 of their papers we have counts for
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gr-qc2023★ 14 cited
Unified Treatment of null and Spatial Infinity IV: Angular Momentum at Null and Spatial Infinity
Abhay Ashtekar, Neev Khera
In a companion paper we introduced the notion of asymptotically Minkowski spacetimes. These space-times are asymptotically flat at both null and spatial infinity, and furthermore t…
gr-qc2023★ 10 cited
Unified Treatment of Null and Spatial Infinity III: Asymptotically Minkowski Space-times
Abhay Ashtekar, Neev Khera
The Spi framework provides a 4-dimensional approach to investigate the asymptotic properties of gravitational fields as one recedes from isolated systems in any space-like directio…
gr-qc2023★ 45 cited
Nonlinear ringdown at the black hole horizon
Neev Khera, Ariadna Ribes Metidieri, Béatrice Bonga +6
The gravitational waves emitted by a perturbed black hole ringing down are well described by damped sinusoids, whose frequencies are those of quasinormal modes. Typically, first-or…