CRASH3: cosmological radiative transfer through metals

Abstract

Here we introduce CRASH3, the latest release of the 3D radiative transfer code CRASH. In its current implementation CRASH3 integrates into the reference algorithm the code Cloudy to evaluate the ionisation states of metals, self-consistently with the radiative transfer through H and He. The feedback of the heavy elements on the calculation of the gas temperature is also taken into account, making of CRASH3 the first 3D code for cosmological applications which treats self-consistently the radiative transfer through an inhomogeneous distribution of metal enriched gas with an arbitrary number of point sources and/or a background radiation. The code has been tested in idealized configurations, as well as in a more realistic case of multiple sources embedded in a polluted cosmic web. Through these validation tests the new method has been proven to be numerically stable and convergent. We have studied the dependence of the results on a number of physical quantities such as the source characteristics (spectral range and shape, intensity), the metal composition, the gas number density and metallicity.

accepted for publication in MNRAS

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Cited by in corpus (35)

• Simulating cosmic metal enrichment by the first galaxies
• Monte Carlo Radiative Transfer
• The Epoch of IGM heating by early sources of X-rays
• Where does galactic dust come from?
• Lyman-Alpha Emitting Galaxies as a Probe of Reionization: Large-Scale Bubble Morphology and Small-Scale Absorbers
• A halo model approach for the 21-cm power spectrum at cosmic dawn
• Large scale simulations of H and He reionization and heating driven by stars and more energetic sources
• Galaxy formation with radiative and chemical feedback
• The history of the dark and luminous side of Milky Way-like progenitors
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• The Concerted Impact of Galaxies and QSOs on the Ionization and Thermal State of the Intergalactic Medium
• Radiative transfer of ionizing radiation through gas and dust: stellar source case
• ARTIST: Fast radiative transfer for large-scale simulations of the epoch of reionisation
• X-ray ionization of the intergalactic medium by quasars
• X-ray background and its correlation with the 21 cm signal
• Ionizing photon production and escape fractions during cosmic reionization in the TNG50 simulation
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• Smoothed Particle Radiation Hydrodynamics: Two-Moment method with Local Eddington Tensor Closure
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• Clumping factors of HII, HeII and HeIII
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• A CRASH simulation of the contribution of binary stars to the epoch of reionization
• Radiative transfer of ionizing radiation through gas and dust: grain charging in star forming regions
• Observing the redshifted 21 cm signal around a bright QSO at $z\sim 10$
• Enabling Radiative Transfer on AMR grids in CRASH
• UV background fluctuations traced by metal ions at $z\approx 3$
• Efficient Photo-heating Algorithms in Time-dependent Photo-ionization Simulations
• A comparison of numerical methods for computing the reionization of intergalacitc hydrogen and helium by a central radiating source
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• Physically motivated modeling of LyC escape fraction during reionization
• Mocking Faint Black Holes during Reionization