Showing 2019 · gr-qcShow all

8 papers · 2 filters

gr-qc2019★ 31 cited

Image formation process with the solar gravitational lens

Slava G. Turyshev, Viktor T. Toth

We study image formation with the solar gravitational lens (SGL). We consider a point source that is positioned at a large but finite distance from the Sun. We assume that an optic…

gr-qc2019★ 29 cited

Spectral Cauchy-characteristic extraction of the gravitational wave news function

Kevin Barkett, Jordan Moxon, Mark A. Scheel +1

We present an improved spectral algorithm for Cauchy-characteristic extraction and characteristic evolution of gravitational waves in numerical relativity. The new algorithms impro…

gr-qc2019★ 138 cited

Learning Bayesian posteriors with neural networks for gravitational-wave inference

Alvin J. K. Chua, Michele Vallisneri

We seek to achieve the Holy Grail of Bayesian inference for gravitational-wave astronomy: using deep-learning techniques to instantly produce the posterior for the source…

gr-qc2019★ 92 cited

Detectability of Intermediate-Mass Black Holes in Multiband Gravitational Wave Astronomy

Karan Jani, Deirdre Shoemaker, Curt Cutler

The direct measurement of gravitational waves is a powerful tool for surveying the population of black holes across the universe. The first gravitational wave catalog from LIGO has…

gr-qc2019★ 31 cited

Imaging extended sources with the solar gravitational lens

Slava G. Turyshev, Viktor T. Toth

We investigate the optical properties of the solar gravitational lens (SGL) with respect to an extended source located at a large but finite distance from the Sun. The static, sphe…

gr-qc2019★ 16 cited

In search of an observational quantum signature of the primordial perturbations in slow-roll and ultra slow-roll inflation

Roland de Putter, Olivier Doré

In the standard inflationary paradigm, cosmological density perturbations are generated as quantum fluctuations in the early Universe, but then undergo a quantum-to-classical trans…

gr-qc2019★ 451 cited

The SXS Collaboration catalog of binary black hole simulations

Michael Boyle, Daniel Hemberger, Dante A. B. Iozzo +37

Accurate models of gravitational waves from merging black holes are necessary for detectors to observe as many events as possible while extracting the maximum science. Near the tim…

gr-qc2019★ 105 cited

On the properties of the massive binary black hole merger GW170729

Katerina Chatziioannou, Roberto Cotesta, Sudarshan Ghonge +53

We present a detailed investigation into the properties of GW170729, the gravitational wave with the most massive and distant source confirmed to date. We employ an extensive set o…