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[ascl:2312.025]
pyC^{2}Ray: Python interface to C^{2}Ray with GPU acceleration

Hirling, Patrick; Bianco, Michele; Giri, Sambit K.; Iliev, Ilian T.; Mellema, Garrelt; Kneib, Jean-Paul

pyC^{2}Ray updates C^{2}-Ray (ascl:2312.022), an astrophysical radiative transfer code used to simulate the Epoch of Reionization (EoR). pyC^{2}Ray includes a new raytracing method, ASORA, developed for GPUs, and provides a Python interface for customizable use of the code. The core features of C^{2}-Ray, written in Fortran90, are wrapped using f2py as a Python extension module, while the raytracing library ASORA is implemented in C++ using CUDA. Both are native Python C-extensions and can be directly accessed from any Python script.

[ascl:2306.050]
SubgridClumping: Clumping factor for large low-resolution N-body simulations

Bianco, Michele; Iliev, Ilian T.; Ahn, Kyungjin; Giri, Sambit K.; Mao, Yi; Park, Hyunbae; Shapiro, Paul R.

SubgridClumping derives the parameters for the global, in-homogeneous and stochastic clumping model and then computes the clumping factor for large low-resolution N-body simulations smoothed on a regular grid. Written for the CUBEP3M simulation, the package contains two main modules. The first derives the three clumping model parameters for a given small high-resolution simulation; the second computes a clumping factor cube (same mesh-size as input) for the three models for the given density field of a large low-resolution simulation.

[ascl:2308.010]
BCemu: Model baryonic effects in cosmological simulations

BCMemu provides emulators to model the suppression in the power spectrum due to baryonic feedback processes. These emulators are based on the baryonification model, where gravity-only N-body simulation results are manipulated to include the impact of baryonic feedback processes. The package also has a three parameter barynification model; the first assumes all the three parameters to be independent of redshift while the second assumes the parameters to be redshift dependent.

[ascl:2312.023]
C^{2}-Ray3Dm: 3D version of C^{2}-Ray for multiple sources, hydrogen only

C^{2}-Ray3Dm performs time-dependent photo-ionization calculations for 3D multiple sources, and for hydrogen only. Based on C^{2}-Ray (ascl:2312.022), it runs under both MPI and OpenMP. The length of subroutines has been reduced to make the code more manageable and easier to read.