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19932026
most citedAccelerating Universes with Scaling Dark Matter

2.5k citations

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212 papers · 1 filter

gr-qc2025★ 2 cited

Exploring the landscape of black hole mimickers

Sergey N. Solodukhin, Vagif Tagiev

We identify a general class of spacetime metrics that mimic the properties of black holes without possessing a true event horizon. These metrics are constrained by the requirements…

gr-qc2025★ 3 cited

Flyby-induced displacement: analytic solution

P. -M. Zhang, Z. K. Silagadze, P. A. Horvathy

The motion of particles hit by a burst of gravitational waves generated by flyby admits, for the derivative-of-the-Gaussian profile, only a numerical description. The profile can h…

gr-qc2024★ 1 cited

Ti and Spi, Carrollian extended boundaries at timelike and spatial infinity

Jack Borthwick, Maël Chantreau, Yannick Herfray

The goal of this paper is to provide a definition for a notion of extended boundary at time and space-like infinity which, following Figueroa-O'Farril--Have--Prohazka--Salzer, we r…

gr-qc2024★ 13 cited

Displacement within velocity effect in gravitational wave memory

P. -M. Zhang, P. A. Horvathy

Particles initially at rest hit by a passing sandwich gravitational wave exhibit, in general, thevelocity memory effect (VM): they fly apart with constant velocity. For specific va…

gr-qc2024★ 2 cited

Conformally related vacuum gravitational waves, and their symmetries

Q. L. Zhao, P. M. Zhang, P. A. Horvathy

A special conformal transformation which carries a vacuum gravitational wave into another vacuum one is built by using Möbius-redefined time. It can either transform a globally def…

gr-qc2023★ 10 cited

Memory Effect and Carroll Symmetry: 50 years later

M. Elbistan, P. -M. Zhang, P. A. Horvathy

Particles at rest before the arrival of a burst of gravitational wave move, after the wave has passed, with constant velocity along diverging geodesics. As recognized by Souriau 50…