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6 papers · 2 filters
Quantum Primordial Standard Clocks
Xingang Chen, Mohammad Hossein Namjoo, Yi Wang
In this paper, we point out and study a generic type of signals existing in the primordial universe models, which can be used to model-independently distinguish the inflation scena…
Dynamical analysis of galaxy cluster merger Abell 2146
J. A. White, R. E. A. Canning, L. J. King +12
We present a dynamical analysis of the merging galaxy cluster system Abell 2146 using spectroscopy obtained with the Gemini Multi-Object Spectrograph on the Gemini North telescope.…
Galaxy cluster lensing masses in modified lensing potentials
Alexandre Barreira, Baojiu Li, Elise Jennings +4
We determine the concentration-mass relation of 19 X-ray selected galaxy clusters from the CLASH survey in theories of gravity that directly modify the lensing potential. We model…
On the equation-of-motion versus in-in approach in cosmological perturbation theory
Xingang Chen, Mohammad Hossein Namjoo, Yi Wang
In this paper, we study several issues in the linear equation-of-motion (EoM) and in-in approaches of computing the two-point correlation functions in multi-field inflation. We pro…
Expansion and Growth of Structure Observables in a Macroscopic Gravity Averaged Universe
Tharake Wijenayake, Mustapha Ishak
We investigate the effect of averaging inhomogeneities on expansion and large-scale structure growth observables using the exact and covariant framework of Macroscopic Gravity (MG)…
Constraints and tensions in testing general relativity from Planck and CFHTLenS including intrinsic alignment systematics
Jason N. Dossett, Mustapha Ishak, David Parkinson +1
We present constraints on testing general relativity (GR) at cosmological scales using recent data sets and assess the impact of galaxy intrinsic alignment (IA) in the CFHTLenS len…