CRASH2: colored packets and other updates
A. Maselli (1), B. Ciardi (1), A. Kanekar (1, 2). ((1) Max Planck, Institute for Astrophysics; (2) Indian Institute of Technology)
TL;DR
This paper introduces CRASH2, an improved cosmological radiative transfer code featuring a multi-frequency algorithm with colored photon packets, enhancing spectrum sampling, efficiency, and precision in modeling ionizing radiation effects.
Contribution
The paper presents a novel multi-frequency algorithm using colored photon packets and code optimizations that improve CRASH's accuracy and performance in simulating ionizing radiation.
Findings
Enhanced spectrum sampling with colored photon packets
Improved code efficiency and precision
Better reproduction of ionizing radiation effects
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.
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