Luca Baiotti

TL;DR: The recent progress in understanding what could be considered Einstein's richest laboratory is reviewed, highlighting in particular the numerous significant advances of the last decade in models, techniques and results for fully general-relativistic dynamical simulations.

TL;DR: In this paper, a generic binary of magnetized neutron stars and solving Einstein equations were used to show that their merger results in a rapidly spinning black hole surrounded by a hot and highly magnetized torus.

TL;DR: In this article, the authors reported the observation of gravitational waves from two compact binary coalescences in LIGO's and Virgo's third observing run with properties consistent with neutron star-black hole (NSBH) binaries.

TL;DR: In this article, a conformal traceless formulation of the Einstein equations is presented for the study of the gravitational collapse of uniformly rotating neutron stars to Kerr black holes, where the initial stellar models are modeled as relativistic polytropes with angular velocities ranging from slow rotation to the mass shedding limit.

TL;DR: KAGRA as discussed by the authors is a 2.5-generation GW detector with two 3'km baseline arms arranged in an 'L' shape, similar to the second generations of Advanced LIGO and Advanced Virgo, but it will be operating at cryogenic temperatures with sapphire mirrors.