711 citations · 2.3k across the 22 of their papers we have counts for
17 papers · 1 filter
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
LISA Definition Study Report
Monica Colpi, Karsten Danzmann, Martin Hewitson +108
The Laser Interferometer Space Antenna (LISA) is the first scientific endeavour to detect and study gravitational waves from space. LISA will survey the sky for Gravitational Waves…
Stochastic gravitational wave background from stellar origin binary black holes in LISA
Stanislav Babak, Chiara Caprini, Daniel G. Figueroa +7
We use the latest constraints on the population of stellar origin binary black holes (SOBBH) from LIGO/Virgo/KAGRA (LVK) observations, to estimate the stochastic gravitational wave…
Fast and robust Bayesian Inference using Gaussian Processes with GPry
Jonas El Gammal, Nils Schöneberg, Jesús Torrado +1
We present the GPry algorithm for fast Bayesian inference of general (non-Gaussian) posteriors with a moderate number of parameters. GPry does not need any pre-training, special ha…
Reconstructing physical parameters from template gravitational wave spectra at LISA: first order phase transitions
Chloe Gowling, Mark Hindmarsh, Deanna C. Hooper +1
A gravitational wave background from a first order phase transition in the early universe may be observable at millihertz gravitational wave (GW) detectors such as the Laser Interf…
CosmicNet II: Emulating extended cosmologies with efficient and accurate neural networks
Sven Günther, Julien Lesgourgues, Georgios Samaras +4
In modern analysis pipelines, Einstein-Boltzmann Solvers (EBSs) are an invaluable tool for obtaining CMB and matter power spectra. To accelerate the computation of these observable…
Cosmology with the Laser Interferometer Space Antenna
Pierre Auclair, David Bacon, Tessa Baker +177
The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravita…
Probing Anisotropies of the Stochastic Gravitational Wave Background with LISA
Nicola Bartolo, Daniele Bertacca, Robert Caldwell +19
We investigate the sensitivity of the Laser Interferometer Space Antenna (LISA) to the anisotropies of the Stochastic Gravitational Wave Background (SGWB). We first discuss the mai…
Bayesian reconstruction of the inflaton's speed of sound using CMB data
Guadalupe Cañas-Herrera, Jesús Torrado, Ana Achúcarro
We update the search for features, due to transient reductions in inflaton's speed of sound, in the Cosmic Microwave Background (CMB) angular power spectrum using Planck 2018 tempe…
Improved reconstruction of a stochastic gravitational wave background with LISA
Raphael Flauger, Nikolaos Karnesis, Germano Nardini +3
We present a data analysis methodology for a model-independent reconstruction of the spectral shape of a stochastic gravitational wave background with LISA. We improve a previously…
CosmicNet I: Physics-driven implementation of neural networks within Boltzmann-Einstein solvers
Jasper Albers, Christian Fidler, Julien Lesgourgues +2
Einstein-Boltzmann Solvers (EBSs) are run on a massive scale by the cosmology community when fitting cosmological models to data. We present a new concept for speeding up such code…
Measuring the duration of inflation with the curvaton
Jesus Torrado, Christian T. Byrnes, Robert J. Hardwick +2
Simple models of single-field inflation in the very early universe can generate the observed amplitude and scale dependence of the primordial density perturbation, but models with…
The stochastic spectator
Robert J. Hardwick, Vincent Vennin, Christian T. Byrnes +2
We study the stochastic distribution of spectator fields predicted in different slow-roll inflation backgrounds. Spectator fields have a negligible energy density during inflation…
Robust predictions for an oscillatory bispectrum in Planck 2015 data from transient reductions in the speed of sound of the inflaton
Jesus Torrado, Bin Hu, Ana Achucarro
We update the search for features in the Cosmic Microwave Background (CMB) power spectrum due to transient reductions in the speed of sound, using Planck 2015 CMB temperature and p…
Searching for primordial localized features with CMB and LSS spectra
Bin Hu, Jesús Torrado
Inspired by the study of mild transient reductions in the speed of sound of the adiabatic mode during inflation, we search for a primordial localized feature imprinted in cosmic mi…
Inflation with moderately sharp features in the speed of sound: GSR and in-in formalism for power spectrum and bispectrum
Ana Achucarro, Vicente Atal, Bin Hu +2
We continue the study of mild transient reductions in the speed of sound of the adiabatic mode during inflation, of their effect on the primordial power spectrum and bispectrum, an…
Localized correlated features in the CMB power spectrum and primordial bispectrum from a transient reduction in the speed of sound
Ana Achucarro, Vicente Atal, Pablo Ortiz +1
The first year of observations by the Planck satellite mission shows that the cosmic microwave background (CMB) fluctuations are consistent with gaussian statistics in the primordi…