4.1k citations · 31.4k across the 275 of their papers we have counts for
11 papers · 2 filters
Multi-field inflation with random potentials: field dimension, feature scale and non-Gaussianity
Jonathan Frazer, Andrew R Liddle
We explore the super-horizon evolution of the two-point and three-point correlation functions of the primordial density perturbation in randomly-generated multi-field potentials. W…
Optimizing future dark energy surveys for model selection goals
Catherine Watkinson, Andrew R. Liddle, Pia Mukherjee +1
We demonstrate a methodology for optimizing the ability of future dark energy surveys to answer model selection questions, such as `Is acceleration due to a cosmological constant o…
The XMM Cluster Survey: Predicted overlap with the Planck Cluster Catalogue
Pedro T. P. Viana, António da Silva, Elsa P. R. G. Ramos +13
We present a list of 15 clusters of galaxies, serendipitously detected by the XMM Cluster Survey (XCS), that have a high probability of detection by the Planck satellite. Three of…
Non-gaussianity in axion N-flation models: detailed predictions and mass spectra
Soo A Kim, Andrew R Liddle, David Seery
We have recently shown that multi-field axion N-flation can lead to observable non-gaussianity in much of its parameter range, with the assisted inflation mechanism ensuring that t…
Unification models with reheating via primordial black holes
J. C. Hidalgo, L. Arturo Urena-Lopez, Andrew R. Liddle
We study the possibility of reheating the universe through the evaporation of primordial black holes created at the end of inflation. This is shown to allow for the unification of…
On the prior dependence of constraints on the tensor-to-scalar ratio
Marina Cortês, Andrew R. Liddle, David Parkinson
We investigate the prior dependence of constraints on cosmic tensor perturbations. Commonly imposed is the strong prior of the single-field inflationary consistency equation, relat…
The XMM Cluster Survey: Optical analysis methodology and the first data release
Nicola Mehrtens, A. Kathy Romer, E. J. Lloyd-Davies +34
The XMM Cluster Survey (XCS) is a serendipitous search for galaxy clusters using all publicly available data in the XMM-Newton Science Archive. Its main aims are to measure cosmolo…
Exploring a string-like landscape
Jonathan Frazer, Andrew R Liddle
We explore inflationary trajectories within randomly-generated two-dimensional potentials, considered as a toy model of the string landscape. Both the background and perturbation e…
COrE (Cosmic Origins Explorer) A White Paper
The COrE Collaboration, C. Armitage-Caplan, M. Avillez +72
COrE (Cosmic Origins Explorer) is a fourth-generation full-sky, microwave-band satellite recently proposed to ESA within Cosmic Vision 2015-2025. COrE will provide maps of the micr…
Planck Early Results XI: Calibration of the local galaxy cluster Sunyaev-Zeldovich scaling relations
Planck Collaboration, P. A. R. Ade, N. Aghanim +207
We present precise Sunyaev-Zeldovich (SZ) effect measurements in the direction of 62 nearby galaxy clusters (z <0.5) detected at high signal-to-noise in the first Planck all-sky da…
Planck early results. IX. XMM-Newton follow-up for validation of Planck cluster candidates
Planck Collaboration, N. Aghanim, M. Arnaud +197
We present the XMM-Newton follow-up for confirmation of Planck cluster candidates. Twenty-five candidates have been observed to date using snapshot (~10 ksec) exposures, ten as par…