83 citations · 295 across the 23 of their papers we have counts for
15 papers · 1 filter
Cosmology of Gravi-Axions
Stephon Alexander, Gregory Gabadadze, Leah Jenks +1
We show how a mass term for gravitational axions (''gravi-axions'') with a Chern-Simons coupling to gravity can naturally arise due to non-perturbative contributions from Euclidean…
Analytic and accurate approximate metrics for black holes with arbitrary rotation in beyond-Einstein gravity using spectral methods
Kelvin Ka-Ho Lam, Adrian Ka-Wai Chung, Nicolás Yunes
A key obstacle for theory-specific tests of general relativity is the lack of accurate black-hole solutions in beyond-Einstein theories, especially for moderate to high spins. We a…
A relativistic treatment of accretion disk torques on extreme mass ratio inspirals around spinning black holes
Abhishek Hegade K. R., Charles F. Gammie, Nicolás Yunes
We model the motion of a small compact object on a nearly circular orbit around a spinning supermassive black hole, which is also interacting with a thin equatorial accretion-disk…
A relativistic treatment of accretion disk torques on extreme mass-ratio inspirals around non-spinning black holes
Abhishek Hegade K. R., Charles F. Gammie, Nicolás Yunes
We develop a relativistically accurate formalism to model the interaction between stellar mass compact objects embedded in thin accretion disks around a non-spinning supermassive b…
Spinning Black Holes in Modified Gravity via Spectral Methods
Kelvin Ka-Ho Lam, Adrian Ka-Wai Chung, Nicolás Yunes
Rapidly-rotating black-hole spacetimes outside general relativity are key to many tests of Einstein's theory. We here develop an efficient spectral method to represent such spaceti…
Extreme mass-ratio inspiral within an ultralight scalar cloud I. Scalar radiation
Dongjun Li, Colin Weller, Patrick Bourg +3
In this work, we study the dynamics of an extreme mass-ratio inspiral (EMRI) embedded within a scalar cloud populated around the massive black hole. This cloud may be generated thr…