Grackle: a Chemistry and Cooling Library for Astrophysics

Abstract

We present the Grackle chemistry and cooling library for astrophysical simulations and models. Grackle provides a treatment of non-equilibrium primordial chemistry and cooling for H, D, and He species, including H2 formation on dust grains; tabulated primordial and metal cooling; multiple UV background models; and support for radiation transfer and arbitrary heat sources. The library has an easily implementable interface for simulation codes written in C, C++, and Fortran as well as a Python interface with added convenience functions for semi-analytical models. As an open-source project, Grackle provides a community resource for accessing and disseminating astrochemical data and numerical methods. We present the full details of the core functionality, the simulation and Python interfaces, testing infrastructure, performance, and range of applicability. Grackle is a fully open-source project and new contributions are welcome.

20 pages, 8 figures, accepted for publication in MNRAS. For more info, visit grackle.readthedocs.io

References in corpus (17)

• The NumPy array: a structure for efficient numerical computation
• The effect of photo-ionization on the cooling rates of enriched, astrophysical plasmas
• Star Formation and Feedback in Smoothed Particle Hydrodynamic Simulations--I. Isolated Galaxies
• A New Calculation of the Ionizing Background Spectrum and the Effects of HeII Reionization
• The 2013 Release of Cloudy
• Effects of Baryons and Dissipation on the Matter Power Spectrum
• The Formation of Population III Binaries from Cosmological Initial Conditions
• Uncertainties in H2 and HD Chemistry and Cooling and their Role in Early Structure Formation
• Metal Cooling in Simulations of Cosmic Structure Formation
• An Unstable Truth: How Massive Stars get their Mass
• Galaxies that Shine: radiation-hydrodynamical simulations of disk galaxies
• How realistic UV spectra and X-rays suppress the abundance of direct collapse black holes
• A UV flux constraint on the formation of direct collapse black holes
• The Impact of HD Cooling on the Formation of the First Stars
• Tracing the Cosmic Metal Evolution in the Low-Redshift Intergalactic Medium
• The role of HD cooling in primordial star formation
• Chemistry and cooling in metal-free and metal-poor gas

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• The Interstellar Medium and Star Formation of Galactic Disks. I. ISM and GMC properties with Diffuse FUV and Cosmic Ray Backgrounds
• Gas Cooling in Hydrodynamic Simulations with An Exact Time Integration Scheme
• GMC Collisions As Triggers of Star Formation. IV. The Role of Ambipolar Diffusion