401 citations · 750 across the 12 of their papers we have counts for
12 papers
Where is the ringdown? Reconstructing quasinormal modes from dispersive waves
Josu C. Aurrekoetxea, Pedro G. Ferreira, Katy Clough +2
We study the generation and propagation of gravitational waves in scalar-tensor gravity using numerical relativity simulations of scalar field collapses beyond spherical symmetry.…
The quasi normal modes of growing dirty black holes
Jamie Bamber, Oliver J. Tattersall, Katy Clough +1
The ringdown of a perturbed black hole contains fundamental information about space-time in the form of Quasi Normal Modes (QNM). Modifications to general relativity, or extended p…
Anomalous decay rate of quasinormal modes
Macarena Lagos, Pedro G. Ferreira, Oliver J. Tattersall
The decay timescales of the quasinormal modes of a massive scalar field have an intriguing behavior: they either grow or decay with increasing angular harmonic numbers , depe…
Prospects for Fundamental Physics with LISA
Enrico Barausse, Emanuele Berti, Thomas Hertog +318
In this paper, which is of programmatic rather than quantitative nature, we aim to further delineate and sharpen the future potential of the LISA mission in the area of fundamental…
Quasi-Normal Modes of Hairy Scalar Tensor Black Holes: Odd Parity
Oliver J. Tattersall
The odd parity gravitational Quasi-Normal Mode spectrum of black holes with non-trivial scalar hair in Horndeski gravity is investigated. We study `almost' Schwarzschild black hole…
Scale Invariant Gravity and Black Hole Ringdown
Pedro G. Ferreira, Oliver J. Tattersall
Scale invariant theories of gravity give a compelling explanation to the early and late time acceleration of the Universe. Unlike most scalar-tensor theories, fifth forces are abse…
Forecasts for Low Spin Black Hole Spectroscopy in Horndeski Gravity
Oliver J. Tattersall, Pedro G. Ferreira
We investigate the prospect of using black hole spectroscopy to constrain the parameters of Horndeski gravity through observations of gravitational waves from perturbed black holes…
Kerr-(Anti-)de Sitter Black Holes: Perturbations and quasi-normal modes in the slow rotation limit
Oliver J. Tattersall
We study the perturbations of scalar, vector, and tensor fields in a slowly rotating Kerr-(Anti-)de Sitter black hole spacetime, presenting new and existing Schrödinger style maste…
Quasi-normal modes of black holes in Horndeski gravity
Oliver J. Tattersall, Pedro G. Ferreira
We study the perturbations to General Relativistic black holes (i.e. those without scalar hair) in Horndeski scalar-tensor gravity. First, we derive the equations of odd and even p…
Speed of gravitational waves and black hole hair
Oliver J. Tattersall, Pedro G. Ferreira, Macarena Lagos
The recent detection of GRB 170817A and GW170817 constrains the speed of gravity waves to be that of light, which severely restricts the landscape of modified gravity theorie…
General theories of linear gravitational perturbations to a Schwarzschild Black Hole
Oliver J. Tattersall, Pedro G. Ferreira, Macarena Lagos
We use the covariant formulation proposed in Tattersall et al (2017) to analyse the structure of linear perturbations about a spherically symmetric background in different families…
A covariant approach to parameterised cosmological perturbations
Oliver J. Tattersall, Macarena Lagos, Pedro G. Ferreira
We present a covariant formulation for constructing general quadratic actions for cosmological perturbations, invariant under a given set of gauge symmetries for a given field cont…