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An Emulator for the Lyman-alpha Forest
Simeon Bird, Keir K. Rogers, Hiranya V. Peiris +3
We present methods for interpolating between the 1-D flux power spectrum of the Lyman- forest, as output by cosmological hydrodynamic simulations. Interpolation is necessary for…
Bayesian emulator optimisation for cosmology: application to the Lyman-alpha forest
Keir K. Rogers, Hiranya V. Peiris, Andrew Pontzen +3
The Lyman-alpha forest provides strong constraints on both cosmological parameters and intergalactic medium astrophysics, which are forecast to improve further with the next genera…
Constraining the Expansion History and Early Dark Energy with Line Intensity Mapping
Kirit S. Karkare, Simeon Bird
We consider the potential for line intensity mapping (IM) experiments to measure the baryon acoustic oscillations (BAO) from 3 < z < 6. This would constrain the expansion history i…
An Efficient and Accurate Hybrid Method for Simulating Non-Linear Neutrino Structure
Simeon Bird, Yacine Ali-Haïmoud, Yu Feng +1
We present an efficient and accurate method for simulating massive neutrinos in cosmological structure formation simulations, together with an easy to use public implementation. Ou…
The implications of an extended dark energy cosmology with massive neutrinos for cosmological tensions
Vivian Poulin, Kimberly K. Boddy, Simeon Bird +1
We perform a comprehensive analysis of the most common early- and late-Universe solutions to the , Ly-, and discrepancies. When considered on their own, massive neutr…