Journal article
21cmfish: Fisher-matrix framework for fast parameter forecasts from the cosmic 21-cm signal
CA Mason, JB Muñoz, B Greig, A Mesinger, J Park
Monthly Notices of the Royal Astronomical Society | OXFORD UNIV PRESS | Published : 2023
Abstract
The 21-cm signal from neutral hydrogen in the early universe will provide unprecedented information about the first stars and galaxies. Extracting this information, however, requires accounting for many unknown astrophysical processes. Seminumerical simulations are key for exploring the vast parameter space of said processes. These simulations use approximate techniques such as excursion-set and perturbation theory to model the 3D evolution of the intergalactic medium, at a fraction of the computational cost of hydrodynamic and/or radiative transfer simulations. However, exploring the enormous parameter space of the first galaxies can still be computationally expensive. Here, we introduce 21..
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Awarded by Korea Institute for Advanced Study
Funding Acknowledgements
CAM acknowledges support by the VILLUM FONDEN under grant 37459, the Carlsberg Foundation under grant CF22-1322, and from NASA Headquarters through the NASA Hubble Fellowship grant HST-HF2-51413.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555. The Cosmic Dawn Center (DAWN) is funded by the Danish National Research Foundation under grant DNRF140. JBM acknowledges support by a Clay Fellowship at the Smithsonian Astrophysical Observatory. Parts of this research were supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. JP was supported by a KIAS individual Grant (PG078701) at Korea Institute for Advanced Study.