829 citations · 2.8k across the 35 of their papers we have counts for
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A general theory of linear cosmological perturbations: stability conditions, the quasistatic limit and dynamics
Macarena Lagos, Emilio Bellini, Johannes Noller +2
We analyse cosmological perturbations around a homogeneous and isotropic background for scalar-tensor, vector-tensor and bimetric theories of gravity. Building on previous results,…
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…
Strong constraints on cosmological gravity from GW170817 and GRB 170817A
Tessa Baker, Emilio Bellini, Pedro G. Ferreira +3
The detection of an electromagnetic counterpart (GRB 170817A) to the gravitational wave signal (GW170817) from the merger of two neutron stars opens a completely new arena for test…
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…