CRASH2: colored packets and other updates

Abstract

In this paper we report on the improvements implemented in the cosmological radiative transfer code CRASH. In particular we present a new multi-frequency algorithm for spectra sampling which makes use of colored photon packets: we discuss the need for the multi-frequency approach, describe its implementation and present the improved CRASH performance in reproducing the effects of ionizing radiation with an arbitrary spectrum. We further discuss minor changes in the code implementation which allow for more efficient performance and an increased precision.

9 pages, 6 figures, accepted for publication in MNRAS

References in corpus (6)

• 3D Lyman-alpha radiation transfer. I. Understanding Lyman-alpha line profile morphologies
• Cosmological Radiative Transfer Codes Comparison Project I: The Static Density Field Tests
• Cosmological Reionization Around the First Stars: Monte Carlo Radiative Transfer
• CRASH: a Radiative Transfer Scheme
• SPHRAY: A Smoothed Particle Hydrodynamics Ray Tracer for Radiative Transfer
• Radiative Transfer Effects on the Lya Forest

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