STEPSIC is an open-source code that produces first- and second-order LPT initial conditions for stereographic, cylindrical, and arbitrary-aspect-ratio cuboid domains, achieving sub-percent power spectrum accuracy against linear theory and other generators.
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astro-ph.CO 2years
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Starlet l1-norm applied to simulated HI brightness temperature maps at z~0.4 yields almost 3x higher figure of merit for cosmological parameters than angular power spectrum by capturing non-Gaussian information and shows robustness to observational systematics.
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STEPSIC: Initial condition generator for stereographic cosmological simulations
STEPSIC is an open-source code that produces first- and second-order LPT initial conditions for stereographic, cylindrical, and arbitrary-aspect-ratio cuboid domains, achieving sub-percent power spectrum accuracy against linear theory and other generators.