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Constraints on black-hole charges with the 2017 EHT observations of M87*
Prashant Kocherlakota, Luciano Rezzolla, Heino Falcke +234
Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M8…
Asymptotic safety casts its shadow
Aaron Held, Roman Gold, Astrid Eichhorn
We set out to bridge the gap between regular black-hole spacetimes and observations of a black-hole shadow by the Event Horizon Telescope. We explore modifications of spinning and…
Probing neutron star structure via f-mode oscillations and damping in dynamical spacetime models
Shawn Rosofsky, Roman Gold, Cecilia Chirenti +2
Gravitational wave and electromagnetic observations can provide new insights into the nature of matter at supra-nuclear densities inside neutron stars. Improvements in electromagne…
Dynamical ejecta and nucleosynthetic yields from eccentric binary neutron-star mergers
L. Jens Papenfort, Roman Gold, Luciano Rezzolla
With the recent advent of multi-messenger gravitational-wave astronomy and in anticipation of more sensitive, next-generation gravitational-wave detectors, we investigate the dynam…
An efficient spectral interpolation routine for the TwoPunctures code
Vasileios Paschalidis, Zachariah B. Etienne, Roman Gold +1
TwoPunctures is perhaps the most widely-adopted code for generating binary black hole "puncture" initial data and interpolating these (spectral) data onto evolution grids. In typic…
Eccentric black hole mergers and zoom-whirl behavior from elliptic inspirals to hyperbolic encounters
Roman Gold, Bernd Bruegmann
We perform a parameter study of non-spinning, equal and unequal mass black hole binaries on generic, eccentric orbits in numerical relativity. The linear momentum considered ranges…